Pupils identify different denominations of United States currency and symbols associated with money and reading prices. In addition, in pairs they identify examples of currency from newspapers and magazines.

In this math learning exercise, students are given 21 percentage problems which they are to work out mentally. There are story problems, tables and simple conversion.

Young scholars explore counting, sorting, and graphing skills. In this data analysis lesson, students sort jelly beans by color, count the jelly beans, and create a bar graph of the jelly beans according to color.

Ninth graders select and build one of five different paper airplane designs and test them for distance and for time aloft. Part of this activity is designed to explore NASA developed software, FoilSim, with respect to the lift of an...

High schoolers analyze the monetary cost associated with smoking cigarettes. They calculate the life expectancy associated with how many cigarettes are smoked a day. They complete story problems as well.

Students estimate the number of items in a group. In this estimation lesson, students are presented with random objects to clean up. Students estimate how many items are present and then compare the actual number of items to their...

For this economics worksheet, students look for the budgets and go through the practical activities of maintaining a monthly expense sheet.

In this interactive activity, discover how rounding off numbers helps you estimate faster.

[Free Registration/Login may be required to access all resource tools.] Estimate products and quotients of fractions and mixed numbers.

As part of a larger site called "Getting started in Chemistry," this site examines significant figures and claims to teach the user "how to avoid telling lies with numbers."

This task builds off of the skill of rounding to the nearest ten and hundred in third grade. Aligns with CCSS.Math.Content.3.NBT.A.1 Use place value understanding to round whole numbers to the nearest 10 or 100.

This site from the University of California provides a lengthy and intelligent discussion of sig figs, absolute and relative precision, accuracy, precision in calculations, rounding off, and the whole shooting match of how we report what...

This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.