Curated OER
Area, Arithmetic and Algebra
Explore the concept of this perfect square trinomial and difference of squares lesson. A hands-on activity that uses paper rectangles and squares to illustrate the perfect-square trinomial and difference of squares formulas.
Curated OER
Add and Subtract to 100
These addition and subtraction problems probably aren't written the way your scholars are used to seeing them, especially since they have double-digit addends and subtrahends. This set of eight horizontal equations gives...
Curated OER
So Many Cats!
First graders listen to the book, So Many Cats, and discuss the number of cats in the story. They demonstrate simple addition problems using cat counters and a work mat in the shape of a house.
Curated OER
Dividing with Fractions
Use paper strips or models to relate division problems to division of fraction problems. Since the materials can be broken up, it helps them to show how they can complete repeated subtraction with fractions and not just whole numbers.
Pennsylvania Department of Education
Multiplication Using Arrays
Explore the concept of multiplication by using arrays. Classmates use arrays to gain a better understanding of multiplication. They break arrays apart to model the distributive property of multiplication over addition. The relationship...
Curated OER
A Sum of Functions
Collaborative learners will see the geometric addition of functions by graphing the sum of two graphed curves on the same coordinate plane. This task then naturally flows into giving learners the algebraic representation of the curves...
Illustrative Mathematics
Boys and Girls, Variation 1
Given a certain amount of boys and certain amount of girls, how many children are there total in the class? Assess learners' ability to use addition and subtraction strategies when solving word problems.
Math Learning Center
Grade 1 Supplement Set A4 – Number and Operations: Equivalent Names
Engage young mathematicians in developing their basic arithmetic skills with these great hands-on activities. Using Unifix® cubes to model a variety of single digit addition and subtract problems, children build a basic...
K-5 Math Teaching Resources
Small Ten Frame Cards with Dots
Solidify your mathematicians' addition and subtraction skills using this ten frame printable. Here, you'll find small, ten frame cards with dots representing numbers 11 to 22, equipped to enhance math strategies and boost proficiency.
Math Learning Center
Grade 1 Assessments and Scoring Checklists, Common Core State Standards
Track your learners' progress in addition, subtraction, counting, and interpreting word problems with a series of assessments. The packet includes scoresheets to note learners' strengths and weaknesses as you address each skill.
Illustrative Mathematics
The Pet Snake
Assess how long the class pet snake grew and how long it was when it started growing with a short learning exercise. Learners use addition and subtraction strategies with measurements to answer three questions.
EngageNY
Understanding Multiplication of Integers
Repeated addition also works for multiplying integers. The lesson plan has the class play the integer game again, but has one card multiplied several times. Scholars write the multiplication expression and the addition expression that...
Curated OER
Relate Addition and Subtraction Facts
In this addition and subtraction facts worksheet, students use problem solving skills to solve 6 word problems that require them to add or subtract.
Curated OER
Addition and Subtraction Textual Problems
In this addition and subtraction worksheet, student solve 5 addition or subtraction word problems. Students then fill in 9 blanks in equations with a + or - sign.
Curated OER
Addition and Subtraction
In this addition and subtraction instructional activity, students solve the double digit math problems using addition or subtraction. Students solve 14 problems.
Curated OER
Addition and Subtraction 5
In this addition and subtraction practice worksheet, students solve 26 problems that require them to add and subtract with 2 digit numbers.
Curated OER
Problem Solving with Addition and Subtraction
In this addition and subtraction worksheet, students answer multiple choice questions about addition and subtraction in word problems. Students answer 10 questions using 2 and 3 digit numbers.
Curated OER
Addition and Subtraction of Integers
In this integer addition and subtraction worksheet, students solve 120 problems that require them add and subtract using 2 and 3-digit integers.
Curated OER
Missing Numbers Addition
In this addition and subtraction practice worksheet, students solve 24 problems that require them to write the missing numbers in the addition sentences.
Curated OER
Missing Numbers Addition (E)
In this addition and subtraction practice worksheet, students solve 24 problems that require them to write the missing numbers in the addition sentences.
Curated OER
Missing Numbers Subtraction (C)
For this addition and subtraction practice worksheet, students solve 24 problems that require them to write the missing numbers in the subtraction sentences.
Curated OER
Addition & Subtraction
In this addition and subtraction worksheet, students solve 4 different types of problems that include adding and subtracting numbers. First, they write addition or subtraction about each picture. Then, students write the correct...
Curated OER
Addition & Subtraction 2
In this addition and subtraction worksheet, students solve 4 different types of problems that include adding and subtracting numbers. First, they practice solving a number of addition and subtraction problems. Then, students complete the...
Curated OER
Decimal Addition and Subtraction
In this decimal addition and subtraction practice worksheet, students use their problem solving skills to solve 24 problems that require them to add and subtract decimals with up to 3 decimal places.
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