Laboratory for Atmospheric and Space Physics
Growing Up With A Mission
New Horizons began its journey to Pluto in 2006. Ten years later, it continues its mission. In that time, scholars have surely grown, but how much more will they grow by the time New Horizons reaches its destination? Find out with an...
CK-12 Foundation
Integers: Tiling a Chessboard with Dominoes
Ten questions make up an interactive all about integers. Scholars answer multiple choice, short answer, and discussion questions using a 4x4 chessboard and dominoes.
Scholastic
Study Jams! Estimate Sums & Differences of Whole Numbers
Estimating is an essential skill used in everyday life. This presentation explains how to apply prior knowledge about rounding numbers to estimating sums and differences. Example problems and assessment include large numbers, making this...
Curated OER
Number Lines and Bead Strings
Students solve addition and subtraction problems using strings of beads and number lines. They mentally perform addition and subtraction problems, and write and solve story problems involving whole numbers.
Curated OER
Eleven Angle Addition Postulate and Adjacent Angle Problems
In this angles instructional activity, students use the angle addition postulate, the idea of adjacent angles and the diagrams shown to answer eleven questions
Curated OER
Arithmetic Identity Property of Addition
In this identity property of addition activity, students complete a total of 10 simple, 1-digit problems. Page has multiple links to additional resources.
Curated OER
Using 10 to Add 7, 8, and 9
In this adding worksheet, students learn to make a ten when adding the numbers 7, 8,or 9. After looking at the examples, students solve 10 problems with addition facts.
Curated OER
Complete the Number Sentences
In this addition worksheet, students use three digit addition and solve for missing addends. Students master 15 problems filling in the missing numerals for each.
Curated OER
Using Addition and Subtraction to Solve Problems II
In this addition and subtraction problem solving instructional activity, 3rd graders use addition and subtraction skills to answer ten multiple choice word problems.
Public Schools of North Carolina
Math Stars: A Problem-Solving Newsletter Grade 2
Develop the problem solving skills of your young learners with this collection of math newsletters. Covering a variety of topics ranging from simple arithmetic and number sense to symmetry and graphing, these...
Smithsonian Institution
Korean War
North and South Korea: two regions divided. The story of the Korean War describes the events that occurred when these two regions' ideologies clashed. The resource uses various images and descriptions of artifacts, in addition to...
Curated OER
Adding Up to Ten
In this addition worksheet, 1st graders write the missing numbers to make an equation that is equal to 10. They count the number of yellow caterpillars to determine the first addend, and count the number of pink caterpillars to determine...
Curated OER
Number Search: Make 10
In this make ten worksheet, learners find at least 12 number sentences that equal ten either by adding, subtracting or multiplying.
Curated OER
Mentally Add Two 2-Digit Numbers pg. 1
Mental math addition is the focus of this worksheet. Students apply a strategy outlined in the worksheet to find the sums. In this worksheet, students find the answers for twenty problems. Answers appear at the end.
Curated OER
Make a Match
Second graders examine the relationship between addition and subtraction. In this number sense lesson, 2nd graders practice their computation skills and use various strategies (including manipulatives and calculators) to...
Curated OER
Number and Operations: Webbing Our Way Through Numbers
Second graders explore estimation and place value. In this place value lesson, 2nd graders estimate and construct numbers while working with spider activities. Students use addition and subtraction to compare estimates. Resources and...
Curated OER
Lesson Four - Making Change
Learners practice making change. In this money lesson, students complete worksheets in which they find the amount of change they would receive from a dollar bill amount. Learners go online and play games on this same concept.
Curated OER
Number Bonds for 5 and 10
Your class will be hopping for joy to complete this worksheet. Students will practice computing number bonds for 5 and 10 with these 19 addition problems.
Curated OER
Quiz: Reading and Making Line Plots
In this reading and making line plots worksheet, students create a line plot for given sets of numbers. In addition, they read graphs and interpret the average. This one-page worksheet contains ten problems.
Public Schools of North Carolina
Math Stars: A Problem-Solving Newsletter Grade 3
Make sure your class stays up with the times using this series of math newsletters. Including word problems that cover topics ranging from consumer math and symmetry to graphing and probability, these worksheets are a...
Curated OER
Adding Integers with Counters
Students add integers and use counters to create a visual. In this algebra lesson, students work in pairs as they use the computer to add integers. They complete an assessment on adding integers at the end of the activity.
Curated OER
Multiplication Versus Addition
Second graders create arrays to study multiplication. In this multiplication lesson plan, 2nd graders split into teams to complete a multiplication table. One team uses addition to solve the table while the other uses multiplication....
Florida Center for Instructional Technology
A Human Number Line: Teacher Notes
Twenty-one pieces of tagboard can lead your class to a greater understanding of integers when you use them to form a human number line. After creating this math tool, two strategies for adding and subtracting will have your...
Curated OER
Number Bonds to 10 and 20
In this number bonds to ten and twenty worksheet, students work in pairs with a deck of subtraction and addition cards. Students match up both sets of cards after they've been placed face down on a table.