Need help with mental math in your classroom? This guide is full of tips, tricks, and examples to help the teacher encourage learners to use their brain instead of a calculator. Practice problems are included with reasons how...

Test your knowledge of tests of significance. A curriculum model for AP® Statistics describes and defines power in terms of tests of significance. It also provides two classroom activities designed to investigate power and how it relates...

Why is adding variance important? A lesson outline defines a variance theorem and how it affects the data statistics. The instruction shows scholars the importance of considering the variance of data and why it requires independence.

Print out these colorfully illustrated PDF file pages to practice your subtraction facts when subtracting from two. Fold them in half and one side shows the problem while the other side shows the problem with the correct answer. Put them...

Click on each puzzle and print out these colorfully illustrated PDF file pages to practice these subtraction facts. Put them in a math center. Laminate them and they will last even longer.

Print out these colorfully illustrated PDF file pages to practice your subtraction facts when subtracting from five. Fold them in half and one side shows the problem while the other side shows the problem with the correct answer. Put...

Print out these colorfully illustrated PDF file pages to practice your subtraction facts when subtracting from three. Fold them in half and one side shows the problem while the other side shows the problem with the correct answer. Put...

Print out these colorfully illustrated PDF file pages to practice your subtraction facts when subtracting from six. Fold them in half and one side shows the problem while the other side shows the problem with the correct answer. Put them...

Print out these colorfully illustrated PDF file pages to practice your subtraction facts when subtracting from one. Fold them in half and one side shows the problem while the other side shows the problem with the correct answer. Put them...

Print out this colorfully illustrated PDF file page to practice your subtraction facts when subtracting from zero. Fold them in half and one side shows the problem while the other side shows the problem with the correct answer. Put them...

Print out these colorfully illustrated PDF file pages to practice your subtraction facts when subtracting from seven. Fold them in half and one side shows the problem while the other side shows the problem with the correct answer. Put...

Print out these colorfully illustrated PDF file pages to practice your subtraction facts when subtracting from eight. Fold them in half and one side shows the problem while the other side shows the problem with the correct answer. Put...

Print out these colorfully illustrated PDF file pages to practice your subtraction facts when subtracting from nine. Fold them in half and one side shows the problem while the other side shows the problem with the correct answer. Put...

Print out these colorfully illustrated PDF file pages to practice your subtraction facts when subtracting from ten. Fold them in half and one side shows the problem while the other side shows the problem with the correct answer. Put them...

Print out these colorfully illustrated PDF file pages to practice your subtraction facts when subtracting from eleven. Fold them in half and one side shows the problem while the other side shows the problem with the correct answer. Put...

Print out these colorfully illustrated PDF file pages to practice your subtraction facts when subtracting from twelve. Fold them in half and one side shows the problem while the other side shows the problem with the correct answer. Put...

Print out these colorfully illustrated PDF file pages to practice your subtraction facts when subtracting from four. Fold them in half and one side shows the problem while the other side shows the problem with the correct answer. Put...

Addition and Subtraction Math Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition and subtraction skills.

This sample chapter from Hurst's book Picturing Math is an excellent resource for using picture books and activities for learning computation.

Addition and Subtraction Math Theme provides an excellent collection of free sample worksheets, teacher resources, lesson plans and interactive media to support addition and subtraction skills.

A huge collection of teacher resources in basic multiplication and division. Information on multiplication as repeated addition and division as repeated subtraction. Includes worksheets, games, PowerPoint presentations, smartboard...