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Activity
Exploratorium

Inverse Square Law

For Teachers 9th - 12th
The inverse square law is revealed when your class participates in this activity. They move a graph paper or perfboard square back and forth in a square of light to see how the intensity changes. You will definitely want to add this...
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Worksheet
Curated OER

Number Sense and Numeration: Multiples, Factors and Square Roots

For Students 6th - 8th
A great resource for any math teacher covering multiples, factors or square roots; this worksheet walks young mathematicians through the logic behind factoring and square roots with a systematic set of problems which gradually increase...
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PPT
Curated OER

Alice in Fractalland

For Teachers 4th - 8th Standards
Take your class on a field trip to Fractalland where they'll learn all about number and shape patterns. Based on Disney's movie Alice in Wonderland, this resource takes young mathematicians on an adventure as they explore patterns in...
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Lesson Plan
Curated OER

Understanding Tiananmen Square

For Teachers 7th - 12th
William Bell's Forbidden City is used as the basis of a study of China, Chinese culture and government, and especially of the events in Tiananmen Square in 1989. Class members select a topic for Internet research and then prepare a...
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Worksheet
Curated OER

Magic Squares, Simultaneous Equations, Hill Walking, and Diophantine Equations

For Students 9th
For this solving equations worksheet, 9th graders solve and complete 21 various types of problems. First, they use the method shown to find the value of xin each equation. Then, students use an algebraic approach to solve the magic...
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Lesson Plan
Illustrative Mathematics

Placing a Square Root on the Number Line

For Teachers 7th - 9th Standards
There are many ways to approach finding the rational approximation of an unknown square root. Here is a problem that will help math learners make a connection between square roots and their order on a number line. As usual, determine two...
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Lesson Plan
Illustrative Mathematics

Counting Squares

For Teachers K - 2nd Standards
Challenge young mathematicians' understanding of squares with this geometry puzzle. The task is simple, identify as many squares as possible in a 3x3 array. Allow learners to work independently or in pairs as they search for squares,...
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Worksheet
Curated OER

Magic Square

For Students 5th - 10th
In this magic square worksheet, students put the number 1 through 9 into the magic square so that each row, column, and diagonal add up to the same number. Students complete 1 square.
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Lesson Plan
Novelinks

The True Confessions of Charlotte Doyle: Magic Square Vocabulary

For Teachers 3rd - 7th Standards
After reading chapter one of The True Confessions of Charlotte Doyle by Avi, take part in a magic square vocabulary activity in which scholars match the term with its definition and insert its corresponding number in to the magic square...
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Lesson Plan
EngageNY

A Focus on Square Roots

For Students 10th - 12th Standards
Pupils learn to solve square root equations and rationalize denominators. Problems include those with extraneous solutions. 
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Lesson Plan
Code.org

Number Systems

For Teachers 9th - 12th
Generating a system of shapes. Groups work together to create a number system using three different shapes as symbols. The groups should come up with the rules that generate all the possible permutations of the three shapes.
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Worksheet
Common Core Sheets

Determining Perimeter with Square Units

For Students 3rd Standards
Third graders determine the perimeter of a shaded section by counting the number of unit squares that surround it. Each section is shaded on a small square unit grid. 
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Worksheet
Common Core Sheets

Determining Area with Square Units

For Students 3rd Standards
Third graders measure area by counting unit squares inside a rectangle.
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Interactive
CK-12 Foundation

Square Roots and Irrational Numbers: Estimating Radicals

For Students 8th - 10th
Try out a resource using triangles to estimate radicals. An interactive app allows learners to approximate some irrational numbers involving square roots. They find the two consecutive numbers that an irrational number lies between by...
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Worksheet
Curated OER

Fraction Number Lines 4

For Students 3rd - 5th Standards
Third, fourth, and fifth graders use this learning exercise to review fractions on a number line. Basic and tricky fractions are used to complete the missing fractions! For your lower-level learners, consider providing little squares of...
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Worksheet
Curated OER

Factoring Difference of Squares

For Students 8th - 9th
In this factoring difference of squares worksheet, learners solve 18 different problems related to factoring the difference of squares for each. First, they write their parentheses out and find the common factors of the squared number....
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Worksheet
Curated OER

Making Two-Dimensional Shapes

For Students Pre-K - 1st
Use this introductory geometry worksheet as a projected warm-up for your class, doing it together and then revealing the explanation on the bottom half. Learners examine a square and a circle, each bisected by a dotted line. They must...
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Worksheet
Curated OER

Number Sense and Numeration: Square Roots

For Students 8th
In this square roots worksheet, 8th graders solve 14 different types of problems to include determining the square root of a number of problems, determining the area of a rectangle and the length of a side of a square with the same...
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Lesson Plan
Curated OER

Exponential Expressions - Perfect Squares, Square Roots

For Teachers 6th - 8th
Color tiles are used to model perfect squares. Alone or in pairs, middle schoolers will find patterns. Afterward, the relationship between perfect squares and roots will be discussed as a whole class.
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Worksheet
Curated OER

Magic Squares Vocabulary Activity for Ella Enchanted by Gail Carson Levine

For Students 9th - 10th
What are magic squares? First, review the activity with your class (there is a description available for you in the resource). Then, match terms from Ella Enchanted to their definitions. When your puzzle, or square, is finished, the...
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Lesson Plan
Curated OER

Investigating Square and Triangle Numbers

For Teachers 5th
Fifth graders build increasingly larger squares and triangles using pattern blocks. They record the growth patterns on a chart and look for corresponding numerical patterns. Students describe the patterns they find and use them to...
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Worksheet
Curated OER

Math Squares

For Students 1st - 2nd
It's Sudoku for beginners! Well, not exactly, but these math squares offer a fun way to practice addition for your students. Each of the sixteen 3x3 squares has four numbers filled in. Scholars add the numbers across and down, then use...
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Worksheet
Curated OER

Magic Squares Vocabulary: Catcher in the Rye

For Students 10th - 12th
Magic squares make learning fun! Seriously! Learners use the given square to review vocabulary terms from J.D. Salinger's Catcher in the Rye. The 16 vocabulary terms are not divided by chapter, they represent the whole book. As learners...
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Worksheet
Curated OER

Perimeters of Squares and Rectangles

For Teachers 2nd - 4th Standards
If you're looking for some perimeter practice problems for beginners, you've found them! Learners reference an example that takes them through the steps of finding the perimeter of a square or rectangle. Then, they complete nine on their...

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