This short video and interactive assessment activity is designed to teach fourth graders about arranging and ordering capacities (english units).

Students learn about material properties, and that engineers must consider many different materials properties when designing. This activity focuses on strength-to-weight ratios and how sometimes the strongest material is not always the best material.

Students make a skydiver and parachute contraption to demonstrate how drag caused by air resistance slows the descent of skydivers as they travel back to Earth. Gravity pulls the skydiver toward the Earth, while the air trapped by the parachute provides an upward resisting force (drag) on the skydiver.

In this math activity, students conduct a strength test using modeling clay, creating their own stress vs. strain graphs, which they compare to typical steel and concrete graphs. They learn the difference between brittle and ductile materials and how understanding the strength of materials, especially steel and concrete, is important for engineers who design bridges and structures.

This short video and interactive assessment activity is designed to teach fourth graders about calculating total weight from scales (metric units).

This short video and interactive assessment activity is designed to give fourth graders an overview of capacity (metric units).

This short video and interactive assessment activity is designed to teach fourth graders about finding the amount of water with illustrations and calculations (metric units).

Students will use their knowledge of appropriate tools and units and determine when to measure liquid volume or weight.

Students learn how the aerodynamics and rolling resistance of a car affect its energy efficiency through designing and constructing model cars out of simple materials. As the little cars are raced down a tilted track (powered by gravity) and propelled off a ramp, students come to understand the need to maximize the energy efficiency of their cars. The most energy-efficient cars roll down the track the fastest and the most aerodynamic cars jump the farthest. Students also work with variables and plot how a car's speed changes with the track angle.

Here’s an easy way to find the center of gravity of a long, thin object, even if the object’s weight is unevenly distributed.

This short video and interactive assessment activity is designed to teach fourth graders about comparing lengths in centimeters using a ruler.

This short video and interactive assessment activity is designed to teach fourth graders about challenge problems - four operations with single units (metric capacities) - word problems.

This short video and interactive assessment activity is designed to teach fourth graders about choosing the correct unit with liters or milliliters.

This short video and interactive assessment activity is designed to teach fourth graders about combining units using addition and subtraction (metric units).

This short video and interactive assessment activity is designed to teach fourth graders about comparing capacities in compound units using words (english units).

This short video and interactive assessment activity is designed to teach fourth graders about compound unit multiplication - word problems.

This short video and interactive assessment activity is designed to teach fourth graders about conversion word problems (english units).

This short video and interactive assessment activity is designed to teach fourth graders about converting pints to cups.

This short video and interactive assessment activity is designed to teach fourth graders about converting gallons to cups.

This short video and interactive assessment activity is designed to teach fourth graders about converting large units to small units (english units).