Space scientists use water displacement to determine the mass of a cubic centimeter mini meteorite, and then use it as a small-scale representative of an asteroid. They figure out the orbital velocity of an asteroid. Then they use a...

Students explore the possibility of an asteroid hitting planet earth. In this planetary instructional activity students complete a lab activity to see the effects of an asteroid hitting earth and compare different craters.

Students investigate the proper way to write numbers using decimals and commas. For this algebra lesson, students recognize the place value of a specific digit. They place numbers correctly on a number line.

Students discover how much a movie is worth. They use decimals and percentages greater than 100 to complete this activity.

In this place value instructional activity, students in pairs shuffle a set of place value cards and then lay them out face down on a table. Students then draw a card and place it under one of their place value cards.