Students sample goodies from an unseen ocean floor and try to accurately describe their composition. This simulation helps students explain the limitations of sampling and the problem of obtaining representative samples of sea floor...

First graders manipulate coins to show equivalencies between pennies and dimes. Given specific values, 1st graders model the specified amounts by using pennies and dimes. Through use of a computer assisted trading coins, students...

Students spend one month keeping track of the mileage and gasoline amounts they or their family has used. Information is entered into a spreadsheet to help calculate the average gas prices over time.