Curated OER
Counting Squares
Build solid foundational skills by counting to ten. Each slide contains concrete objects to count and both the numeric and word representation of each item counted. For example: Learners will count 2 red squares, see the number 2 and the...
NASA
Atomic Numbers and Multiplying Fractions
Here is a way for beginning chemists to review the skill of multiplying fractions! A segment of the periodic table of elements is presented at the top of the page, from which learners obtain the atomic number to use in six calcualtions....
Curated OER
Write the Missing Numbers
Which numbers are missing on these hundreds charts? Beginning counters fill in the blank squares in a set of hundreds charts. One simply has the numbers 1 and 100, while the others are missing every other number, only even numbers, or...
Illustrative Mathematics
Estimating Square Roots
No calculators! Assure your learners that they can find the square root of a large number. All they need are two known squares close by and a table. Come up with an additional practice and your number crunchers will have it mastered in...
Illustrative Mathematics
Irrational Numbers on the Number Line
There are four irrational numbers that participants need to graph. Pi(π), -(½ x π), and √17 are easy to approximate with common rational numbers. On the other hand, the commentary describing the irrational number 2√2 is not clear. It...
EngageNY
Existence and Uniqueness of Square Roots and Cube Roots
Teach cube roots by building on an understanding of square roots. The third installment of a 25-part series asks learners to solve simple quadratic and cubic equations using roots. Scholars compare square roots and cube roots throughout...
Curated OER
Complete the Square: Increments of 9
In this numbers in increments of 9 worksheet, students fill in 60 blank squares with numbers from 0 to 891. Students figure out each square in increments of 9.
University of Utah
Rational and Irrational Numbers
Conquer any irrational fears you might have of irrational numbers. As class members investigate how to represent numbers geometrically, they learn about rational and irrational numbers, including approximating and ordering rational...
EngageNY
Square Roots
Investigate the relationship between irrational roots and a number line with a resource that asks learners to put together a number line using radical intervals rather than integers. A great progression, they build on their understanding...
EngageNY
Simplifying Square Roots
Explore the process of simplifying square roots through an analysis of perfect squares. The fourth instructional activity of 25 expects individuals to find the perfect square factors in each radicand as a means of simplifying. The...
Inside Mathematics
Magic Squares
Prompt scholars to complete a magic square using only variables. Then they can attempt to solve a numerical magic square using algebra.
Curated OER
Shizuko’s Daughter: Magic Square
Vocabulary really adds up with magic squares! Using words from Shizuko's Daughter by Kyoko Mori, kids line up words and definitions to come up with the same sum across and down the square.
Curated OER
Pride and Prejudice: Magic Square Activity
Turn Pride and Prejudice into a math activity with a magic squares lesson. Kids read nine character traits and pair them to a list of the book's characters in order to complete the activity and find the magic number.
EngageNY
An Appearance of Complex Numbers 1
Complex solutions are not always simple to find. In the fourth lesson of the unit, the class extends their understanding of complex numbers in order to solve and check the solutions to a rational equation presented in the first lesson....
EngageNY
Comparing Irrational Numbers
Build on your classes' understanding of irrational numbers by comparing their values. The 13th lesson in the 25-part module has individuals estimate values of both perfect and non-perfect roots. They finish by graphing these numbers on a...
Illustrative Mathematics
Looking at Numbers Every Which Way
Assess class members' ability to look at numbers every which way. A helpful worksheet contain four tasks, including writing numbers as a sum of 100's, 10's, and 1's, and drawing a picture to represent the number.
101 Questions
Circle-Square
How do the area and perimeters of circles and squares compare? A clever video illustrates the change in the area of a circle and square while their total perimeter stays the same. The task is for learners to predict the point where the...
Code.org
Binary Numbers
All you need is a zero and a one. Build pupils' understanding of binary values and number systems to gain familiarity with binary numbers. Using a hands-on activity and technology, scholars learn how the binary system works and its place...
K-5 Math Teaching Resources
Fraction Squares
Invite your class to demonstrate their fraction knowledge using this fraction squares printable that shows a whole divided into halves, thirds, fourths, fifths, sixths, eighths, tenths, twelfths, and sixteenths.
Novelinks
The Joy Luck Club: Vocabulary Strategy (Magic Squares)
As part of their study of Amy Tan's The Joy Luck Club, readers engage in a magic squares vocabulary activity.
EngageNY
Does Every Complex Number Have a Square Root?
Help the class find a better way. Pupils recall finding nth roots or a complex number in polar form from a previous module to find the square root of a complex number. Using the second installment in a series of 23, scholars discover it...
Novelinks
The Color of Water: Word Square Instructions
Immaculate, accumulation, dissipation. Vocabulary drawn from chapter 16 of James McBride's memoir, The Color of Water, can prove to be challenge for readers. To help kids understand the meaning of these words and what they add to the...
CK-12 Foundation
Factorization of Quadratic Expressions: Algebra Tiles
What does it mean to factor the difference of two squares? The interactive presents an area model of the difference of two squares. Pupils rearrange the model to create a rectangular area. The learners determine the length and width...
CK-12 Foundation
Use Square Roots to Solve Quadratic Equations: Plus or Minus
Get two answers from a single equation. Pupils use the interactive to take the square root of nine and see the graphical representation of the two solutions. Individuals realize that solutions to quadratic equations that are solved by...