Students quantify the percent of light reflected from solutions containing varying concentrations of red dye using LEGO© MINDSTORMS© NXT bricks and light sensors. They begin by analyzing a set of standard solutions with known concentrations of food coloring, and plot data to graphically determine the relationship between percent reflected light and dye concentration. Then they identify dye concentrations for two unknown solution samples based on how much light they reflect. Students gain an understanding of light scattering applications and how to determine properties of unknown samples based on a set of standard samples.

This short video and interactive assessment activity is designed to give fifth graders an overview of capacity - word problems.

This short video and interactive assessment activity is designed to teach fifth graders about measurement: greater than or less than a yard?.

This short video and interactive assessment activity is designed to teach fifth graders about division of lengths (metric units).

This short video and interactive assessment activity is designed to teach fifth graders about estimating the measure of objects by image: feet or inches?.

This short video and interactive assessment activity is designed to teach fifth graders about finding the total amount of liquid in liters and milliliters.

This video introduces the measurement of dissolved oxygen in a water body as an important indicator of ecosystem health, and demonstrates students analyzing a water sample for dissolved oxygen. The resource includes a video and a written transcript, and is supported by the Dissolved Oxygen Protocol in the GLOBE Teacher's Guide. This is one of seven videos on hydrology in the 24-part instructional video series describing scientific protocols used by GLOBE (Global Learning and Observation to Benefit the Environment), a worldwide, hands-on, K-12 school-based science education program.

This video describes how to select a soil moisture study site and sampling strategy, and identifies what laboratory instruments will be needed to complete a soil moisture analysis. Students are shown collecting soil moisture data and asking questions about what soil moisture data might tell them about the environment. The resource includes a video and a written transcript, and is supported by the Soil Moisture Protocol in the GLOBE Teacher's Guide. This is one of five videos about soils in the 24-part instructional video series describing scientific protocols used by GLOBE (Global Learning and Observation to Benefit the Environment), a worldwide, hands-on, K-12 school-based science education program.

This short video and interactive assessment activity is designed to teach fifth graders about visually finding weight in compound units.

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

This short video and interactive assessment activity is designed to teach fifth graders about single object length (english units).

This short video and interactive assessment activity is designed to teach fifth graders about single object length ii (english units).

This short video and interactive assessment activity is designed to teach fifth graders about converting meters to centimeters.

This short video and interactive assessment activity is designed to teach fifth graders about converting kilometers to meters.

This short video and interactive assessment activity is designed to teach fifth graders about converting meters to millimeters.

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

This short video and interactive assessment activity is designed to teach fifth graders about comparing meters, centimeters, and millimeters.

This short video and interactive assessment activity is designed to teach fifth graders about mixed adding and subtracting of capacities (english units).

This short video and interactive assessment activity is designed to give fifth graders an overview of metric capacity operations.

This short video and interactive assessment activity is designed to teach fifth graders about different unit length comparisons.