Fifth graders use a scientific calculator to practice finding equivalencies They discuss the possible uses for the scientific calculator. They experiment with other basic functions using the calculator.

Second graders encounter the need to assess the code in English for tens is that the word ends in "-ty." They explore the meaning of two or three digit whole numbers to realize that the meaning of words like sixty can be decoded by...

In this ESL vocabulary building worksheet, students read 10 sentences that each have a missing word. For each question, students choose the best answer from 4 similar choices.

Learners explore letter Aa. In this letter recognition lesson, students participate in country, state, food, literature, physical education, colors, careers, music, and game activities that are linked to the main lesson page....

You can use an abacus to count, add, subtract, multiply and more. Try this interactive abacus and see if you can make the numbers. Choose "here's more" for some clues. Good luck!

A photo of an abacus. Also known as a counting frame, the abacus has been an important tool for making calculations for thousands of years, and is still used in many places today. This particular example is a Russian abacus.

Use the diagram on this one page website to solve the problem. There are teacher notes and the solution is only a click away.