Curated OER
Addition and Subtraction
In this addition and subtraction activity, students enhance their addition and subtraction skills by completing the 42 problems.
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
Addition: Equation to 10 (Missing Addend)
Use this worksheet as a way to solve missing addneds up to 10. Learners are given base 10 blocks and make number sentences by completing 16 missing addend number sentences. The structure of each problem is similar to a factor tree and...
Curated OER
Base 10 Rounding
Students build two, three, and four digit numbers using base ten blocks and round those numbers. In this rounding numbers lesson, students work in pairs and build numbers using base ten blocks.
National Math + Science Initative
Introduction to Decimals
Three activities make up an introductory lesson designed to create a strong foundation in comparing fractions to decimals and exploring and building decimal models. Pupils brainstorm and complete a Venn diagram to show how decimals and...
Curated OER
MathKeys Software "Unlocking Whole Numbers, Vol. 11(Place Value for Four Digit Numbers)"
Third graders explore the place values of four digit numbers by writing four digit numbers and examining the effects of rearranging the numbers' digits. They practice making their four digit number with base-ten blocks then rearrange the...
Curated OER
Building Numbers
Fifth graders use place value clues to find a given number. For this place value lesson, 5th graders work with the MathKeys program using place value clues and base-ten blocks to build a number and determine its value.
Curated OER
Multiplication Word Problems Using Different Representations
Students solve multiplication word problems by using base 10 blocks and drawing pictures. In this multiplication lesson plan, students also write a reflection of their work.
Curated OER
Place Value
Fifth graders explore number meanings and their relationship. Using place value clues and base-ten blocks, 5th graders build a models of numbers and determine their value. To reinforce number relationship, students participate in a...
West Contra Costa Unified School District
Adding Numbers
Support math instruction at home with a helpful reference sheet designed for parents. Three pages cover the subject of addition with written details and labeled pictures.
Curated OER
Pattern Block Polygons
Sixth graders create polygons. In this shapes lesson, 6th graders explore prefixes such as oct, tri, quad, pent, etc. and share their findings. Students use pattern blocks to create two different polygons and label them.
Curated OER
Three-Digit Addition and Subtraction With Regrouping
Second graders access prior knowledge of addition and subtraction using two-digit numbers and calculate easily with them. In this three-digit addition instructional activity, 2nd graders learn to add and subtract three-digit numbers with...
National Security Agency
Place Value - Butterflies Floating Place to Place
Learn about butterflies and place value in a series of interdisciplinary lessons! With several worksheets that reference butterfly facts in word problems, kids can practice science and math in one activity. Additional worksheets are...
Illustrative Mathematics
Saving Money 1
How many days will it take Louis to save enough money for school supplies and new pair of shoes? Focus on Common Core math standards with a two-part task that involves a word problem and counting manipulatives.
Curated OER
Place Value Lessons
Students can learn about place value using interesting lessons, activities, and games.
Curated OER
Number Sense
First graders practice rounding 4 digit numbers using place value concepts. In this estimating sums and differences instructional activity, 1st graders explore clustering, rounding, and front end estimation as methods for rounding decimals.
Curated OER
Positive and Negative Numbers
Pupils use blocks and markers to illustrate the processes of adding, subtracting, multiplying and dividing integers. In this mathematics instructional activity, learners use Algebra blocks to demonstrate multiplying polynomials.
Curated OER
How Many Ways?
Second graders develop number sense. In this number sense lesson, 2nd graders use multiple ways to represent numbers including written numerals, tally marks and manipulatives. Students correctly use place value to the thousands place.
Curated OER
Math Games for Skills and Concepts
A 27-page packet full of math games and activities builds on algebra, measurement, geometry, fractional, and graphing skills. Young mathematicians participate in math games collaboratively, promoting teamwork and skills practice.
Curated OER
Place Value
First graders practice place value by completing problems that allow them to group 10 items together to create groups of 10 and see what is left over. In this place value lesson plan, 1st graders use cups to put 10 items in them, and...
Curated OER
Investigation - Representing Place Value
Third graders demonstrate models to represent a 3 digit counting number. They use manipulative materials to represent place value in whole numbers. Students represent numbers in expanded notation.
Curated OER
Dinosaur Math
Students read How to Train with a T.Rex and Win 8 Gold Medals and solve math problems. In this dinosaur math lesson, students write a math story to go with the dinosaur story. Students discuss the needed strategies. Students complete a...
Curated OER
Hands On: Model Numbers
In this addition and subtraction practice worksheet, students sharpen their problem solving skills as they solve 6 story problems using number models.
Curated OER
I'll Have an Order of Subtraction Please!
Learners explore number values by completing consumer math worksheets. In this math functions lesson, students identify the use of a decimal in numbers and the place values that are represented when dealing with money. Learners complete...