Interactive
CK-12 Foundation

Inverse Functions: Definition of Inverse Functions

For Students 11th - Higher Ed Standards
Is the inverse of a function also a function? Pupils manipulate the graph of a function to view its inverse to answer this question. Using a horizontal and vertical line, class members determine whether the initial function is...
Printables
K-5 Math Teaching Resources

Base Ten Cards (tens and ones)

For Students K - 2nd Standards
Strengthen your class's understanding of place value with this series of base-ten flash cards. Including illustrations representing a variety of numbers from 13 to 94, this resource can be used in many different ways...
Worksheet
Curated OER

Count the Pictures: Numbers to 10

For Students K - 1st
Help your young learners master 1:1 correspondence by counting pictured objects, and to communicate answers in multiple choice format. Given a number, they choose which of 3 rows of objects is the correct match. Four opportunities to...
Worksheet
Curated OER

Odd One Out

For Students Pre-K - K
Which word doesn't rhyme? As they practice vowel-sound recognition, scholars examine rows of familiar objects to determine which object doesn't rhyme. There are four rows here, each with a beginning image and three subsequent images....
Interactive
CK-12 Foundation

Existence: One-to-One Functions and Inverses

For Students 11th - Higher Ed Standards
One-to-one means the answer is simple, right? Given four graphs, pupils use a vertical line to test each graph to find out if they are one-to-one. By using the resource, learners realize that not all one-to-one relations are functions....
Printables
K-5 Math Teaching Resources

Ten Frame Cards

For Students K - 2nd Standards
Support your visual learners on their journey to mathematical understanding with this collection of ten frame cards. Representing numbers from 1 to 42, these pictures can be used in any number of ways to introduce children to the concept...
Worksheet
Curated OER

Counting Colors (Two Colors)

For Students K - 1st
In this counting worksheet, students learn one to one correspondence by counting the number of colored boxes in a set of boxes then recording the number in each box provided.
Activity
Curated OER

K-5 Mathematics Module: Number and Number Sense

For Students K - 5th Standards
Reinforce number sense with a collection of math lessons for kindergarteners through fifth graders. Young mathematicians take part in hands-on activities, learning games, and complete skills-based worksheets to enhance proficiency...
Worksheet
Curated OER

Odd One Out

For Students Pre-K - 1st
Practice lowercase letters i-n with this initial sounds worksheet. There is a row of three objects for each of these letters, and scholars examine them to determine which does not begin with the letter sound. This would work best with...
Worksheet
Curated OER

Odd One Out

For Students Pre-K - K
There is one object that doesn't belong in each of these sets. Scholars circle the one that doesn't rhyme, listening for the /o/ vowel sound (long and short) in the others. They connect two of the objects to printing practice,...
Worksheet
Curated OER

Counting Objects in a Set (1-3)

For Students Pre-K - K
Here is a good counting to 3 instructional activity. Learners solve six problems in which they count and circle the number of objects indicated by a numeral. Reinforces 1:1 correspondence since they draw the number of circles indicated...
Worksheet
Curated OER

Odd One Out

For Students Pre-K - K Standards
Which of these pictures doesn't belong? Based on the first picture in each row, learners circle the picture that doesn't rhyme with it. Then, they get printing practice with rhyming CVC words pie and cry by tracing an outline....
Worksheet
Curated OER

Adding Animals

For Students 1st Standards
Writing equations from images helps young mathematicians grasp addition, especially when they get to look at cute animals as they do it. There are six number sentences here, each illustrated with a set of animals corresponding to...
Handout
K-5 Math Teaching Resources

Mini Math Word Wall

For Students K - 2nd Standards
Provide a little extra support for your emerging mathematicians with a personal word wall. Including graphics and images that support children with learning to count, identify colors and shapes, and read high frequency words,...
Interactive
CK-12 Foundation

The Real Numbers: Surjections, Injections and Bijections

For Students 8th - 12th
Inject a great interactive into your lesson plans. Scholars learn about injections, surjections, and bijections of sets. They use an interactive that shows an example for each of these relationships between sets.
Lesson Plan
EngageNY

Applications of Congruence in Terms of Rigid Motions

For Students 9th - 10th Standards
Corresponding parts, congruent parts, congruent corresponding parts—what does it all mean? The resource challenges pupils to identify corresponding parts for pairs of figures. It uses examples of figures that undergo rigid...
App
Oddrobo Software

King of Math Junior

For Students K - 6th Standards
Do your students have what it takes to be the king of math? Find out with this fun skills practice game that covers a wide range of topics from counting and basic operations to measurement and fractions.
Worksheet
2
2
Math Drills

Scary Multiplication

For Students 3rd - 4th Standards
Boost multiplication fluency with a set of Halloween math worksheets, each with 60 one-digit multiplication problems. Learners multiply numbers two through nine.
Printables
1
1
Houghton Mifflin Harcourt

Unit 4 Math Vocabulary Cards (Grade 1)

For Students 1st Standards
Support math vocabulary using a set of 25 flashcards. The set consists of a variety of bold-faced word cards and corresponding labeled picture cards. Terms include even numbers, regrouping, skip counting, and more.
Worksheet
Curated OER

Number Lines and Whole Numbers

For Students 1st - 3rd
Use number lines to visually represent addition and subtraction equations. First, scholars complete an addition number sentence and represent the equation on a number line. Next, they examine a number line and write the corresponding...
Worksheet
1
1
Curated OER

What's the First Letter? (A to H)

For Students Pre-K - 1st Standards
Here are eight words, and each of them is missing a letter. Not just any letter but the first letter. Oh my! Put your phonics masters to work and have them determine which of the eight letters (a-h) completes each word.
App
One Billion

Math, Age 3-5

For Students Pre-K - 1st Standards
Jump start children's math education with this fun basic skills resource. Offering dozens of different touch-and-swipe activities with colorful graphics, this program is perfect for all young learners.
Activity
Gilder Lehrman Institute of American History

Harriet Beecher Stowe Sends Uncle Tom’s Cabin to Victoria and Albert, 1852

For Students 9th - 12th Standards
Harriet Beecher Stowe's plea for abolition is not only laid plain in her acclaimed novel, Uncle Tom's Cabin, but in her written correspondence as well. High schoolers read a letter written by Stowe to Prince Albert and Queen Victoria to...
Worksheet
Curated OER

Counting: 1-100

For Students K - 2nd
A simple worksheet with pictures of drums in a 100-chart format. Have your students count the drums, and identify where the drums are that correspond to numbers ending in zero and five. Enlarge on a copier to 11x17 sized paper so...