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Activity
Under the Dome

Triangle Mystery ...

For Students 6th Standards
Build a pyramid based on sums. Individuals watch a video of a computer program that creates a pyramid of numbers based upon a starting number. The scholars develop a hypothesis on how the number trick works and share their thoughts on...
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Interactive
Arcademics

Kitten Match

For Students 1st - 3rd Standards
An engaging learning game tests scholars' knowledge of how to make a number using addition. Several players race to pick two numbers that add up to a given sum. 
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Printables
SEN Teacher

Arithmetic Maker

For Teachers K - 6th Standards
With endless possibilities, you can create custom flashcards to take to class as easy as 1, 2, 3! Let this flashcard creator do the work for you, just chose the level of difficulty, add or subtract, and the number of place values. Each...
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Interactive
1
1
Scholastic

Study Jams! + and - Without Regrouping

For Students 1st - 4th Standards
Addition and subtraction are essential skills for all young mathematicians. Explain the step-by-step process with respect to place value using these real-world examples. Focus is on numbers in the tens, hundreds, and thousands, making...
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Lesson Plan
Curated OER

TI-82 PROFICIENCY

For Teachers 5th - 8th
Young scholars find the proper factors for numbers one through fifty using either the divisibility laws or TI-82. They determine the sum of the proper factors for each number. If the sum of the factors is less than the number itself,...
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Lesson Plan
PBS

Remove One

For Teachers 6th - 8th Standards
With a set of 15 chips and a number line, learners predict what sums may occur with the rolling of two dice. When their sum comes up, they remove one of the chips from their number line with the objective of being the first to remove...
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Assessment
3
3
Illustrative Mathematics

Operations with Rational and Irrational Numbers

For Teachers 9th - 12th Standards
Learners complete addition and multiplication tables that include rational and irrational numbers. They also answer a series of questions about the sums and products of irrational and rational numbers. One suggested modification would be...
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Worksheet
Curated OER

Least Squares

For Students 12th - Higher Ed
In this least squares worksheet, students solve 6 different problems that include the least squares of numbers. First, they plot 3 points on the axes shown and draw in their best approximating line. Then, students estimate the slope and...
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Worksheet
Curated OER

Countdown Challenge: Tricks for Finding Multiples of 3 and 4

For Students 7th - 8th
In this tricks for finding multiples worksheet, students explore rules of divisibility. They compute the sum of the digits to determine if a number is divisible by three. Additionally, students identify the last two digits of a number to...
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Worksheet
Curated OER

Adding: Written Questions

For Students 2nd - 3rd
Sometimes, written addition problems can confuse students. In this addition worksheet, students find sums for 10 written questions such as: "Find the sum of 30 and 50."
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Lesson Plan
Curated OER

Butterfly Addition: Color by Numbers

For Teachers K - 1st
Children learning to add numbers up to 11 develop the strategy of using the larger number as the first addend and counting on from there to find a sum. They define addition and review the meaning of the plus (+) symbol. To practice, they...
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Lesson Plan
Curated OER

Operations on Polynomials

For Teachers 9th - 11th
Students simplify and reduce polynomials. In this algebra lesson, students find the sum, difference, product and quotient of polynomials and monomials. They use the order of operation correctly.
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Lesson Plan
Curated OER

Ring Toss Math

For Teachers K - 2nd
Young mathematicians play Ring Toss Math to find sums and differences to 18. If you're looking for an engaging, in-class game to help reinforce these mathematical concepts, this lesson could be for you!
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Lesson Plan
Curated OER

Math Worksheets - Magic Squares

For Teachers 2nd - 4th
In this magic squares worksheet, pupils find the magic number in each of the 4 magic squares. Each of the magic squares is completely filled so that students only have to find the common sum in each puzzle.
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Lesson Plan
Curated OER

Book Title: One is a Snail, Ten is a Crab

For Teachers K - 3rd
Students read a story and write math problems.  In this reading and math comprehension instructional activity, students preview and read the book "One is a Snail, Ten is a Crab".  Students predict ways to get a sum of 11, write math...
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Activity
Ohio Resource Center

Egyptian Fractions

For Teachers 4th - 6th
What is an Egyptian Fraction? Print this sheet as a bell-ringer activity. Budding mathematicians solve three short answer problems. They write three fractions as unit fractions so that the numerator is one and the sum is equal to the...
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Worksheet
Curated OER

More Addition

For Students 4th - 5th
Turn your mathematicians into addition superstars with these multiple-addend equations. They add up three, four, and five-digit numbers to find the sums, a few of which are six-digit numbers. The twelve vertically aligned equations...
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Lesson Plan
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1
Illustrative Mathematics

Egyptian Fractions II

For Teachers 8th - 12th Standards
The Egyptians used unit fractions to describe all other fractions. Your class will rewrite rational expressions in order to deduce information about rational numbers. The activity starts with specific fractions, guides you through a few...
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Lesson Plan
Curated OER

Excel Lesson

For Teachers 5th
Fifth graders will perform exercises and write the number of each exercise performed on the collection data sheet. They survey eight of their classmates for their exercise data and write that data on the collection data sheet. They then...
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Lesson Plan
Curated OER

Triangle Inequality

For Teachers 4th - 6th
Students discover that the sum of the lengths of any two sides of a triangle must be greater than the third side. They are shown how a triangle is formed using three strips such as that the triangle is seen inside the strips.
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Lesson Plan
Curated OER

Worksheet 24 Spring 1996

For Teachers 11th - Higher Ed
In this math worksheet, young scholars find all the vectors in three dimensional space that have the length of 4. Also, the first and third components are the same. Finally, the second component is the sum of the first and third components.
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Worksheet
Curated OER

7th Grade Math Worksheet

For Students 7th
In this integers worksheet, 7th graders solve 10 different problems that include various types of integers and graphs. First, they determine the sum of 3 consecutive integers. Then, students find the ratio between 2 areas of similar...
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Worksheet
Curated OER

Decimals - Mid Chapter Quiz

For Students 5th - 7th
Here is a decimals worksheet in which learners complete a quiz asking about least to greatest, standard form, sums, and more having to do with decimals. They complete eight problems.
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Worksheet
Curated OER

Numbers and Operations

For Students K - 2nd
For this counting worksheet, students count the fruit on each of the trees and then write the sum. Students complete 4 problems total.

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