Page 568 - Worksheets & Printables

Prefixes and Suffixes Sample - Grades 1-2 Grammar (Docs)
ELA, Language Development, ESL, Grammar, Common Core, Resources for Teachers, Grade 1, 2, Teacher Tools, Tests, Quizzes and Tests, Worksheets & Printables, Worksheets, Assessments, Centers, Activities

Prefixes and Suffixes - 1 Sample Lesson ELA MCQS Overview: In this series of lessons, students will embark on an engaging exploration of the grammar skills that bring our language to life. These lessons are designed to help students identify, understand, and effectively use language arts skills in their writing and speech. Used with the free supplementary materials available for all topics, each lesson builds on the last, offering a mix of direct instruction, interactive group activities, and independent practice. Through fun and creative tasks, students will learn how to recognize grammar in sentences, understand their role in sentences and use them to enhance their own writing and speech. Prefixes and Suffixes Overview: Includes: Intro to Prefixes Intro to Suffixes Forming Suffixes Determining Affix Word Meaning Docs Version This is the Docs editable and fillable version. This download is available in GOOGLE Docs, GOOGLE Forms, GOOGLE Slides. PDF, PPT, WORD, check the links below for more details. FULL CATALOG OF DOWNLOAD LINKS HERE Grade 1/2 Links: Capitalization and Punctuation Google Docs Google Forms Google Slides PDF PPT Word Free Supplementary Materials Pack Adjectives Google Docs Google Forms Google Slides PDF PPT Word Free Supplementary Materials Pack Nouns Google Docs Google Forms Google Slides PDF PPT Word Free Supplementary Materials Pack Pronouns Google Docs Google Forms Google Slides PDF PPT Word Free Supplementary Materials Pack Verbs Google Docs Google Forms Google Slides PDF PPT Word Free Supplementary Materials Pack Prefixes & Suffixes Google Docs Google Forms Google Slides PDF PPT Word Free Supplementary Materials Pack Sentence Structure Google Docs Google Forms Google Slides PDF PPT Word Free Supplementary Materials Pack Subject-Verb Agreement Google Docs Google Forms Google Slides PDF PPT Word Free Supplementary Materials Pack ELA Review Questions Overview Questions have three answer choices. There are a handful of pictures on each test for aesthetic purposes, as well as a review sheet covering most of the topics covered in the product. Introduction or Example Sheet Each topic will include an introduction or example sheet to go through first with your students. Full Answer Keys Full answer keys and sample responses are provided so no matter how busy you are, you know you're covered! In the Supplementary Pack Interactive Ice Breakers: Fun, hands-on activities that get students thinking about adjectives right from the start. Guided Practice: Teacher-led exercises that reinforce the day’s lesson, ensuring students can confidently identify and use adjectives. Group and Partner Tasks: Collaborative activities that allow students to work together to solve problems, categorize adjectives, and create descriptive sentences. Independent Worksheets: Structured worksheets that provide individual practice and help solidify understanding of key concepts. Exit Tasks: Quick, reflective activities at the end of each lesson that assess understanding and encourage students to apply what they’ve learned. For similar downloads and other frees, do check out Cored Group on TeachSimple.

Adding Word Problems with 3 Numbers Worksheet
Math, Addition and Subtraction, Addition, Preschool, Grade 1, 2, Worksheets & Printables, Word Problems, Worksheets

This Adding Word Problems with 3 Numbers Worksheet is perfect for helping students learn to solve addition word problems with three addends. This is a great resource for teachers who want to help their students learn this essential math skill.

Locations Inferences Worksheet
ELA, Reading, Grade 1, 2, 3, Worksheets & Printables, Worksheets

This worksheet is designed to help students practice making inferences about locations. It can be used in a number of ways, such as in class or for homework.

The Pearl Chapter 4 | Double Entry Journals
ELA, Literature, Grade 12, Worksheets & Printables, Worksheets

This 2-page resource is a Double Entry Journal for The Pearl Chapter 4. This comes in PDF so you can print and distribute to students. It also comes in an editable Word document so students can type into it on their devices. There are 4 different journal entries for students to respond to and indicate which lines from the play support their response. Students will summarize, reflect and analyze in their journal entries.

Crash Course: Government and Politics #18: Legal System Basics Worksheet
Life Studies, Business, Grade 7, 8, 9, 10, 11, 12, Worksheets & Printables, Worksheets

Introduce key concepts of the United States legal system with this engaging video worksheet for Crash Course Government and Politics episode 18. Students will reinforce their understanding of legal structure, statutes, precedent, appeals, court systems, and differences between criminal and civil law. The 2-page Google Classroom compatible handout features 15 critical thinking questions paired with timestamped references to the fast-paced Crash Course video. Educators can use this stand-alone product to kickoff a Civics or Government unit , as a homework assignment, or even for sub plans. The included answer key supports self-paced learning. This concise and informative video guide brings the legal system to life for secondary students.

Country Study Research Project - Panama - Central America
Geography, Social Studies, History, Grade 7, 8, 9, 10, 11, 12, Worksheets & Printables, Worksheets, Writing Prompts

Country Study Research Project - Panama - Social Studies - Central America This Panama Country Study Research Project can be an ideal teaching activity for your Geography and Social Studies classes, designed specifically for Middle School and High School students (from 7th grade to 12th grade) . Suitable for Country Study Activities , this printable, 2 page PDF teaching resource ecourages Social Studies + Geography students and learners to explore important aspects and facts of Panama (Central America). This Country Study Research Project on Panama can guide students through the process of building a comprehensive Country Study Report , while emproving their knowledge in areas such as geography, history, economy, language, and culture . Teachers and educators can find the following Geography + Social Studies activities and exercises in this Panama Country Study Resource, Social Studies : 🌍 Interactive Map Activity A QR code linking directly to Panama 's location on Google Maps 🏔️ Geography Questions Explore Panama' s terrain, climate, and notable physical features. 📜 History Questions Investigate key events and historical figures that have shaped Panama 's past till nowadays 🗣️ Language Exploration Learn about the official language spoken in Panama : Spanish 💼 Economy Questions Analyze Panama economic system, major industries, and current challenges. 🏙️ Capital City Focus Write about 7 important sights in Panama ’s capital city, Panama City 🏘️ Other Cities Identify and write 5 additional cities across Panama 🎭 Culture Prompt Writing about Panama ’s unique cultural identity within the Central American region This Social Studies, Geography Country Study on Panama (Central America) PDF Digital Teaching Resource (2 PDF Printable Slides) is ideal for Middle School and High School students from 7th grade to 12th grade to test Panama and its Culture At Social Studies with Alan , we’re committed to providing fun, high-quality resources that help teachers inspire curiosity and global awareness in the classroom. Because learning should always be engaging and memorable . ➡️ Explore more Social Studies & Geography teaching tools by clicking here: Learning with Alan

Math Practice Simplified H - Fractions
Math, Fractions, Grade 3, 4, 5, Worksheets & Printables, Worksheets

This mathematics-based resource is designed for grades 3-5. It’s imperative for students to have a strong foundation in basic math skills. This resource provides activities to help students practice their fractions. Students will identify fractions through addition, subtraction, multiplication, and division. The study of fractions also includes unlike fractions and mixed numbers. This resource is perfect to prepare students to succeed on standardized tests . An answer key is included. Aligned to National Council of Teachers of Mathematics (NCTM) Standards.

ADDITION+SUBTRACTION OPERATIONS | 5 FREE WORKSHEETS
Math, Addition and Subtraction, Addition, Subtraction, Early Learning, Elementary, Homeschool Resources, Not Grade Specific, Pre-K, Activities, Teacher Tools, Worksheets & Printables, Games, Worksheets

ADDITION+SUBTRACTION OPERATIONS | 5 FREE WORKSHEETS THIS RESOURCE HAVE 5 FUNNY EXERCISES OF ADDITION AND SUBTRACTION. INTRODUCTION: EDITORIAL ARENAS EDUCATIVAS is dedicated to providing high-quality educational content to help children learn efficiently and with joy. Check out our full store to find materials focused on reading, writing, math, and Spanish. We're excited to be part of your learning experience! MAIN INFORMATION: 1) What types of activities or content does this document include? This type of document contains educational activities, all specially designed to be developed and understood in an easy and educational way. 2) How can this material support children's learning or development? This material will help our students learn in an educational way. It will support your students by guiding them in a much more playful way to achieve easy and rapid learning. 3) What specific skills are developed using this resource? Students will be able to develop their attention, concentration, creativity, and imagination skills. It will also allow students to develop their cognitive skills such as comprehension, analysis, and others. 4) Who is the ideal audience for this document? This document and/or teaching resource is primarily intended for young students, meaning those between the ages of 5 and 12, in other words, students in early childhood and/or primary education. However, it can also be used by the general public if required. SECONDARY AND COMPLEMENTARY INFORMATION: 1) Does this material allow for custom editing? This educational document is available in PDF format, so you cannot edit it. You simply need to download and then print it. 2) What main topic does the resource cover? This document has been developed to address a basic topic that children in kindergarten through elementary school should master. This document will also be helpful to the general public who want to learn. 3) What version does this document correspond to? This educational resource is designed in PDF format, which will make your download experience much simpler and easier to use.

ESL TED Talk Activity - My Daughter, Malala - Ziauddin Yousafzai
ELA, Language Development, ESL, Vocabulary, Writing, Formal Writing, Creative Writing, Grade 7, 8, 9, 10, 11, 12, Worksheets & Printables, Writing Prompts, Worksheets

ESL TED Talk Activity - My Daughter, Malala - Ziauddin Yousafzai Make English language learning more meaningful and inspiring with this engaging ESL TED Talk activity worksheet based on Ziauddin Yousafzai ’s powerful talk, " My Daughter, Malala" (speech by Pakistan education activitist and Novel Peace Prize laureate Malala Yousafzai's father that shares how he raised Malala to defy gender discrimination in Pakistan. He emphasizes education’s power, a father’s duty to empower daughters, and how challenging patriarchy can transform families, societies, and the future of girls worldwide). Ideal for middle school and high school English language learners (Grades 7–12) , this resource encourages students to practice listening, speaking, vocabulary, and writing skills in a real-world context. Whether you're teaching in an ESL classroom, tutoring one-on-one, or running a language center , this ready-to-use worksheet is an excellent addition to your ESL lesson plans. 🧩 What’s Included in This ESL Resource? This 3-page printable ESL worksheet set includes a variety of dynamic and student-centered tasks: TED Talk Overview Section A brief introduction space for students to note important background information (title, speaker, date, and main theme of the talk). 1 QR Code linked to the TED Talk's Youtube Video Pre-Listening Discussion (Warm-Up) Vocabulary Builder Space to identify and define new vocabulary words from the TED Talk, helping learners improve word recognition and usage. Listening Comprehension Questions Targeted questions to check understanding of key ideas, supporting details, and examples from the talk. Speaking Activity Thought-provoking discussion questions designed to get students talking about the TED Talk's theme 3 Writing Activities Includes a summary writing task , a personal opinion paragraph , and a creative response assignment where students imagine giving a follow-up TED Talk. 🎯 Who Is This ESL Worksheet For? English language learners at the intermediate to advanced levels Middle school and high school ESL/ EFL students (Grades 7–12) Newcomers and English learners from diverse cultural backgrounds ESL teachers, tutors, and English language centers around the world This resource is especially useful for educators seeking authentic, real-world content that makes English learning both effective and inspiring "Learning with Alan" is dedicated to provide high-quality teaching resources and educational materials for ESL EFL TESOL teachers. It aims to support teachers, educators, and tutors in both online and offline environments, helping them achieve their teaching goals while creating a fun, stimulating atmosphere for learning English. Always remember: learning is fun, and so is English! If you want to browse more PDF ESL, EFL, TESOL Teaching Resources and Educational Material click here Learning with Alan!

"How the Camel Got His Humps" Reading Packet
ELA, Reading, Grade 3, Worksheets & Printables, Worksheets

This is a "How the Camel Got His Humps" Reading Packet. It is a leveled text for 3rd grade. It comes with question cards, graphic organizers and much more.

There Was An Old Lady Who Swallowed A Bell Book Companion - BOOM Cards
Special Resources, Speech Therapy, Kindergarten, Preschool, Grade 1, 2, 3, 4, 5, Novel Studies, Worksheets & Printables

Short & Long Vowels - Phonics Practice Simplified
ELA, Language Development, Phonics, Preschool, Grade 1, Worksheets & Printables, Worksheets

This primary phonics-based resource is designed for grades Kindergarten to 1. Short & Long Vowels uses visual clues and context clues to recognize common sounds and regular sounds. Reading is a crucial skill for all primary students. Phonics provides the building blocks for these early readers. Sounding out the words students are learning helps them to become independent readers. Students will understand that long and short vowels have different sounds. They will learn that different sounds are spelled differently. They will recognize consonants and how they can be used to create new sounds. For example, two consonants together can make one sound; whereas those same consonants separately will make a different sound. This program will not only encourage young readers to form these sound relationships, but also form the foundation to become successful readers.

September Writing Prompts - Learning Passport
ELA, Writing, Creative Writing, Grade 2, 3, 4, Writing Prompts, Worksheets & Printables

September Writing Prompts - Learning Passport The Learning Passport is a highly effective and interactive educational resource. It provides engaging writing exercises for students in grades 2 to 4. This innovative teaching tool consolidates four double-sided pages into an exciting 32-page activity , elevating the student's educational journey by offering a unique blend of fun, learning, and creativity. Versatility & Motivation The Learning Passport can be used in multiple ways such as additional challenges for quick learners during morning routines or creative writing periods, individual activities, small groups tasks or whole class exercises. And it also serves as a meaningful homework assignment. Thematic Prompts Incorporates September-oriented themes into its makeup ensuring timely and current material. A wide variety of prompts like 'Positive Thinking Day', 'National Video Game Day', 'National Make Your Bed Day' to ‘Teddy Bear Day’ etc., help progressively build cognitive abilities. Accountability System This resource innovatively incorporates accountability in learning wherein upon completion of each topic students get rewarded with a passport stamp which fuels their motivation towards achieving new milestones. Each sheet contains space for twenty such stamps making printing an efficient task for both teachers and students alike. Setup Procedure & Environmental Friendly Design: The setup is straightforward; print on both sides of the paper, cut out sections as prescribed, fold according to instructions given before stapling together resulting in assembled passports working efficiently overall reducing stress levels on educators with an emphasis on maximizing student engagement ability via its design. This resource is eco-friendly utilizing only four papers per passport significantly minimizing paper wastage without any negative impact on work productivity or the fun quotient. Importance of Language Arts This product is heavily focused on language arts with a special emphasis on aiding development in creative writing skills. It becomes an indispensable tool for classrooms striving for multi-dimensional developmental goals and invigorating instruction methodology blending creativity with knowledge.

State of Maine Spelling List
Social Studies, History, History: USA, Geography, Grade 3, 4, 5, Worksheets & Printables, Worksheets

Introducing a fun spelling list for upper elementary students to learn new vocabulary related to the State of Maine. With a total of 13 words, this PDF worksheet contains 10 regular words like "Augusta", "Kennebec", and "Penobscot" along with 3 bonus vocabulary words including "acadia", "quahog", and "wabanaki". As a versatile teaching tool, it can be used as in-class spelling practice, a supplement to social studies lessons on Maine's history and geography, or as a take-home assignment. By engaging with this spelling list, students will expand their knowledge of Maine in an interactive way.

Letter Sounds and Rhymes Worksheet
ELA, Language Development, Phonics, Pre-Reading, Preschool, Kindergarten, Grade 1, Worksheets, Worksheets & Printables

This worksheet is perfect for helping students learn to identify words that rhyme. By connecting the dots and writing the words, they will be able to see the patterns in how words that rhyme are put together. This is a great tool for any teacher looking to help their students learn about rhyming words.

Back to School Math Review Task Cards for 7th Grade
, Grade 7, Task Cards, Worksheets & Printables

This resource is a set of Back to School Math Review Task Cards for 7th Grade. There are a total of 28 task cards that are printed 4 per page. These math cards review many math skills including decimals, word problems, expressions and much more. A recording sheet and answer key are included. You could use these for small groups, centers , a SCOOT game and so much more.

Skip Count by Tens Chart Worksheet
Math, Numbers, Addition and Subtraction, Addition, Grade 1, 2, 3, Worksheets, Worksheets & Printables

This worksheet is a great way for students to practice skip-counting by 10s from any number to complete the pattern. This is a skill that is essential for students to learn and this worksheet is a great way for them to practice.

Short Vowel Flash Cards and Word Lists - Short u
ELA, Language Development, Phonics, Reading, Preschool, Grade 1, Worksheets & Printables, Flashcards

Need short vowel flash cards for "short u"? These flash cards and word lists are just what you need. Students blend sounds to read the words on the flashcards. Includes 10 Word Lists which can be used for assessments or send home for students to practice with their families or to "show what you know." -Most words are cvc. -42 word cards (flashcards) are included in color and black/white. -There are 6 cards per page. -Print 7 pages and you have all the flash cards . -Can be used when teaching Word Families. -Use for students beginning to blend as well as those working on fluency. -Includes 10 Word Lists with 9 or 10 words on each list. Includes the following words – cub, hub, rub, sub, tub, bud, cud, dud, mud, bug, dug, hug, jug, mug, rug, tug, bum, gum, hum, mum, sum, yum, bun, fun, gun, nun, pun, run, sun, up, cup, pup, us, bus, but, cut, gut, hut, jut, nut, rut, tux. These cards are versatile. Look at all the ways you can use them- ✅Practice blending sounds to read words. ✅Build vocabulary. ✅Work on rhyming words (similarly spelled words). ✅Change a beginning letter (cub, cut, cup) or ending letter (bud, bun, bus) to make a new word. ✅Sort words by ending sounds. Here’s more about the Word List- ⭐️The Word List Set includes 10 Word Lists with 9 or 10 words on each list. ⭐️Words on the first lists are grouped by Word Family. ⭐️There are four duplicate lists on each page for easy prep. ⭐️These word lists are great to send home for extra practice or for students to “show what they know” – just print and cut! ⭐️These can also be used for quick informal assessments. ⭐️Another option for using the word lists is to print the lists on different colors of card stock and place on a ring for quick review.

ESL Reading Comprehension + Writing Activity Worksheets - Casu Marzu
ELA, Language Development, ESL, Vocabulary, Reading, Reading Comprehension, Writing, Creative Writing, Formal Writing, Grade 7, 8, 9, 10, 11, 12, Worksheets & Printables, Worksheets, Writing Prompts

ESL Reading Comprehension + Writing Activity Worksheets - Casu Marzu - Sardinian Cheese This ESL - EFL Teaching Resource on "Casu Marzu - Sardinian Cheese" (3 PDF Worksheets Slides - Reading Comprehension + Writing Activity) can be ideal to improve Language skills in English. Ideal students for this ESL EFL TESOL Reading + Writing Activity are Foreign Students at middle and High School (7th - 12th Grade; teens) . Newcomers or any ESL Learner is also more than suitable for this ESL - EFL - TESOL - TEFL (English as a Second or Foreign Language) Activity on "Casu Marzu - Sardinian Cheese" (origins, background, history and evolution + culinary uses + methods + nutrition + legacy in Sardinian society). This Teaching Educational Resource Product can also be ideal for ESL EFL TESOL Centers worldwide or any English second language tutor. Intermediate Advanced English as a Second or Foreign Language (ESL - EFL - TESOL - TEFL) learners are suitable for this ESL - EFL - TESOL - TEFL Teaching Resource on "Casu Marzu - Sardinian Cheese" (Worksheet; 3 PDF Printable slides) In this English Second or Foreign Language (ESL - EFL - TESOL - TEFL) Reading Comprehension + Essay Writing Activity Worksheet on "Casu Marzu - Sardinian Cheese" (origins, background, history and evolution + culinary uses + methods + nutrition + legacy in Sardinia), the following ESL - EFL - TESOL - TEFL (English Second or Foreign Language) activities are included: 1 text on "Casu Marzu - Sardinian Cheese" (origins, background, history and evolution + culinary uses + methods + nutrition + legacy) 23 Comprehension Questions related to the previous text on "Casu Marzu - Sardinian Cheese" (with related space where students can answer to this text's comprehension questions) 2 essay prompts for a writing activity on "Casu Marzu - Sardinian Cheese" (writing an essay on whether you have tried Casu Marzu or not and whether you liked it or not and whether you would ever like it + writing an essay on another weird food; describing it and comparing it to Casu Marzu) This ESL - EFL - TESOL - TEFL ( English Second or Foreign Language ) Teaching Resource Reading + Writing Activity (essay prompts) on "Casu Marzu - Sardinian Cheese" (origins, background, history and evolution + culinary uses + methods + nutrition + legacy) is great for Intermediate Advanced English as a second or foreign language learners (ESL- EFL - TESOL - TEFL). This English Second Language Worksheet on "Casu Marzu - Sardinian Cheese" (origins, background, history and evolution + culinary uses + methods + nutrition + legacy) aims to train and Reading Comprehension + Writing Skills. "Learning with Alan" is a teaching resources store that aims to provide high quality teaching resources and educational materials for ESL EFL TESOL (English Second or Foreign Language) teachers, tutors and educators. It aims to support teachers, educators, and tutors in both online and offline environments, helping them achieve their teaching goals while creating a fun, stimulating atmosphere for learning English. Always remember: learning is fun, and so is English! If you want to find more ESL - EFL - TESOL - TEFL ( English Second or Foreign Language ) Teaching Resources and Educational Material click here Learning with Alan!

Supply & Demand Worksheet
Social Studies, Economics, Grade 3, 4, 5, Worksheets & Printables, Worksheets

This activity is a great way for students to learn about supply and demand! By choosing a local gas station's prices to watch, they can observe how changes in prices affect the market.

Triple Digit Subtraction with Regrouping Worksheet
Math, Addition and Subtraction, Subtraction, Grade 2, 3, 4, Worksheets & Printables, Worksheets

This resource is a Triple Digit Subtraction with Regrouping Worksheet . There are 26 problems with 1 bonus problem on this page. Answer key included.

Triple Digit Addition Worksheet
Math, Addition and Subtraction, Addition, Grade 1, 2, 3, Worksheets & Printables, Worksheets

This Triple Digit printables /worksheets/worksheets-by-subject/math-worksheets/addition-and-subtraction-worksheets/addition-worksheets">Addition Worksheet is a great resource for students who are struggling with addition problems that involve regrouping. By following the addition steps on the worksheet, students will be able to solve these problems with ease.

Limits at infinity - transcendental functions - Worksheet
Math, Calculus, Grade 10, 11, 12, Worksheets & Printables, Worksheets

Worksheet with 10 questions along with the answers, calculating the limit as the function approaches either to positive or negative infinity of the most common transcendental functions: logarithmic, and trigonometric functions.

Adding and Subtracting Polynomials Hidden Message Digital and Printable | Math Activity
Math, Algebra, Grade 9, 10, 11, 12, Worksheets, Worksheets & Printables

The Adding and Subtracting Polynomials Hidden Message activity is designed to engage students in an exciting and interactive math experience. With no preparation required, this activity offers a combination of printable and digital formats, providing flexibility for both classroom and remote learning environments. By integrating the concept of adding and subtracting polynomials, this activity aims to strengthen students' skills while encouraging them to decipher a hidden message. The activity begins with students being presented with 17 polynomial calculations. These calculations involve adding and subtracting polynomials, which require students to apply their knowledge of polynomial operations. As they solve each calculation, students will uncover a corresponding letter or symbol that contributes to revealing the hidden message. This element of mystery adds an extra layer of engagement, motivating students to solve the problems accurately and efficiently. The activity's emphasis on adding and subtracting polynomials serves multiple educational purposes. Firstly, it reinforces students' understanding of polynomial operations, allowing them to practice combining like terms, identifying coefficients and exponents, and applying the rules of addition and subtraction. By encountering various polynomial expressions within the calculations, students gain exposure to different forms and complexities, enhancing their ability to manipulate polynomials effectively. Furthermore, this activity encourages critical thinking and problem-solving skills. As students progress through the calculations, they must analyze the expressions and strategically select the appropriate operations to perform. They need to consider the signs, exponents, and variable terms to ensure accurate computation. This process fosters logical reasoning and promotes a deeper understanding of polynomial concepts. The inclusion of both digital and printable formats accommodates different learning preferences and instructional settings. Teachers can choose to distribute printed worksheets to students in the classroom or share digital versions via online platforms. The digital format offers interactive features, such as fillable forms or drag-and-drop options, which enhance student engagement and provide immediate feedback. The printable format allows students to work offline and offers a tangible experience that some learners may find more comfortable. Overall, the Adding and Subtracting Polynomials Hidden Message activity is a dynamic and student-centered math exercise. By integrating the element of a hidden message and incorporating polynomial operations, this activity aims to make learning enjoyable while reinforcing essential mathematical skills. Whether in the classroom or during remote learning, this no-prep activity provides a stimulating and accessible way for students to enhance their understanding of adding and subtracting polynomials.