Curated OER
Addition and Subtraction Facts to 20
Fact families, and the relationship between addition and subtraction are the foucs of this lesson. Learners explore strategies to help with their addition and subtraction facts. They use doubles, related facts, and fact families to help...
Scholastic
Study Jams! Relate Addition & Subtraction
Understanding the inverse relationship between addition and subtraction is essential for developing fluency in young mathematicians. Zoe and RJ explain how three numbers can form fact families that make two addition and two subtraction...
The New York Times
News and News Analysis: Navigating Fact and Opinion in the Times
Help your class understand the difference between fact and opinion by exploring the New York Times homepage and articles. In pairs or small groups, pupils complete a scavenger hunt, answering the provided questions. Next, discuss the...
DK Publishing
Addition Fact Families
Fact families are an excellent way to connect math operations for beginners to addition and subtraction. Use the examples here to review this concept before scholars try these on their own. For each, they examine two related number...
Curated OER
Related Addition and Subtraction
Warm up your mathematicians using this fact families worksheet! Because the answer is explained below, consider projecting this for the whole class and uncovering the bottom half after collecting student responses. There are two...
Curated OER
Fact Families
There is something to be said for fact families. Classmates read problems and write related fact families and number sentences. There are 6 wonderful problems to solve.
Curated OER
Inverse Relationship Between Addition and Subtraction
Elementary schoolers review their knowledge of addition and subtraction through studying fact families. They use cubes to help them add or subtract. Students answer the teachers question with addition and subtraction fact answers.
Curated OER
Related Addition and Subtraction
These fact families need more members! Here are 10 addition and subtraction problems that need related facts written in. There are single and double-digit numbers, and each of these is written out in a sentence. Note that the grammar is...
Curated OER
Related Addition and Subtraction
Can your scholars match these fact families? There are eight number sentences listed here, both addition and subtraction. Learners scan a list of eight other equations, matching each original with one that is in its fact family. All...
Curated OER
Fact Families to 10
In this mathematics worksheet, 1st graders complete each fact family. Then they solve each addition and subtraction sentence using counter to show their sentence. Students also explain their idea of what a fact family is to them.
Curated OER
Related Addition and Subtraction
These fact families are missing a member! Learners examine a set of three equations from the same fact family and write in the one that is missing. There are two more similar questions here. There are no directions, so be sure your kids...
Curated OER
Addition and Subtraction Fact Family Lesson Plans
Get more bang for your buck by teaching addition and subtraction fact family lesson plans.
Curated OER
Fact Families
In this fact family worksheet, 1st graders complete 4 sets of blanks that show addition and subtraction fact families. They examine 3 sets of numbers and determine which one shows the fact families that go with the numbers 5, 2, and 7.
Illustrative Mathematics
Kiri's Mathematics Match Game
Learning math is so much more fun when it involves playing games. Following the rules of the classic game Memory, young mathematicians flip over two cards at a time as they look for numbers whose sum or difference is equal to the value...
Curriculum Corner
Number Family Cards
Sixteen number families test young mathematicians' knowledge of the commutative and associative property of addition. Pupils list four problems—two addition and two subtraction—related to a given set of three numbers.
Curated OER
Developing Strategies for Addition and Subtraction
Primary graders develop strategies to assist them with addition and subtraction. They discover number combinations and numerical facts which enable them to add and subtract more effectively. Students use these techniques to complete...
Curated OER
Subtraction with Regrouping Lesson Plan
Learners explore regrouping while subtracting. In this subtraction lesson plan, pupils manipulate base 10 blocks to demonstrate regrouping. Multiple resources are provided.
Illustrative Mathematics
Sum and Difference Angle Formulas
Need practice deriving trigonometric angle formulas? With this worksheet, pupils derive the sum and difference formulas for cosine and tangent and the difference formula for sine. Scholars use the sine sum formula and other known...
Curated OER
Twelve Days of Christmas--Prediction, Estimation, Addition, Table and Chart
Scholars explore graphing. They will listen to and sing "The Twelve Days of Christmas" and estimate how many gifts were mentioned in the song. Then complete a data chart representing each gift given in the song. They also construct...
Laboratory for Atmospheric and Space Physics
Jupiter’s Relative Size
How do you properly illustrate the extreme size difference between two planets—Earth and Jupiter? With the help of jellybeans, of course! Create a scale model of Jupiter's mass compared to Earth using a fishbowl, 1,400 beans, and a dixie...
Curated OER
Family at Home
Students fold paper to form a house, then use three numbers to make fact families for their houses. They write a family of multiplication and division facts on a piece of paper cut in the shape of a house.
Curated OER
Relate Addition and Subtraction
In this addition and subtraction worksheet, students use problem solving skills to write number sentences and solve 6 word problems that require them to add and subtract.
Curated OER
Who's In The Fact Family?
Students study related addition and subtraction facts. In this math instructional activity, students use related addition and subtraction to solve problems. Students use manipulatives to explore fact families.
Curated OER
Two-Digit Subtraction With Regrouping
Young scholars practice their subtraction skills by solving 2 digit subtraction equations the teacher lists on the board. In this subtraction with regrouping lesson, students use the regrouping method to solve the 2-digit subtraction...