There are no monarch caterpillars in the Mariposa Grove community garden since vegetables were planted.

Students take on the role of scientists in order to figure out why there are no monarch caterpillars in the community garden since vegetables were planted. They investigate how plants and animals get what they need to live and grow, and make a new plan for the community garden that provides for the needs of the monarch caterpillars in addition to producing vegetables for humans.

Pinball machines allow people to control the direction and strength of forces on a ball.

Students take on the role of pinball machine engineers as they investigate the effects of forces on the motion of an object. They conduct tests in their own prototypes (models) of a pinball machine and use what they learn to contribute to the design of a class pinball machine. Over the course of the unit, students construct a foundational understanding of why things move in different ways.

Students at Carver Elementary School are too cold during morning recess, while students at Woodland Elementary School are too hot during afternoon recess.

The principals of Woodland Elementary and Carver Elementary need student weather scientists to help them explain why Woodland’s playground is warmer than Carver’s at recess. Students gather data from models of the sun and Earth’s surface and observe their own playgrounds to figure out how sunlight causes changes in the temperatures of different surfaces. Students then use models to figure out why Woodland’s playground sometimes floods.