Curated OER
Mass, Volume, and Weight
Learners explore mass, volume, and weight. In this science and measurement lesson, students compare volume, mass, and weight after listening to the teacher's description of each. Learners explore different scales and balances and...
Walter Fendt
Walter Fendt: Sistema De Poleas
This site is an interactive applet using the principles of a pulley system. The number of pulleys can be varied as well as the load lifted