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CK-12 Foundation
Inverse Functions: Definition of Inverse Functions
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...
K-5 Math Teaching Resources
Base Ten Cards (tens and ones)
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...
Curated OER
Count the Pictures: Numbers to 10
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...
Curated OER
Odd One Out
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....
CK-12 Foundation
Existence: One-to-One Functions and Inverses
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....
K-5 Math Teaching Resources
Ten Frame Cards
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...
Curated OER
Counting Colors (Two Colors)
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.
Curated OER
K-5 Mathematics Module: Number and Number Sense
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...
Curated OER
Odd One Out
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...
Curated OER
Odd One Out
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,...
Curated OER
Counting Objects in a Set (1-3)
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...
Curated OER
Odd One Out
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....
Curated OER
Adding Animals
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...
K-5 Math Teaching Resources
Mini Math Word Wall
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,...
CK-12 Foundation
The Real Numbers: Surjections, Injections and Bijections
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.
EngageNY
Applications of Congruence in Terms of Rigid Motions
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...
Oddrobo Software
King of Math Junior
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.
Math Drills
Scary Multiplication
Boost multiplication fluency with a set of Halloween math worksheets, each with 60 one-digit multiplication problems. Learners multiply numbers two through nine.
Houghton Mifflin Harcourt
Unit 4 Math Vocabulary Cards (Grade 1)
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.
Curated OER
Number Lines and Whole Numbers
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...
Curated OER
What's the First Letter? (A to H)
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.
One Billion
Math, Age 3-5
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.
Gilder Lehrman Institute of American History
Harriet Beecher Stowe Sends Uncle Tom’s Cabin to Victoria and Albert, 1852
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...
Curated OER
Counting: 1-100
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...