What are polygons? Learners find the perimeter of various geometric figures that the teacher has drawn in chalk on the sidewalk. A worksheet to record their measurements is provided. Get your third graders outside and exploring the world...

This performance task tests students' ability to measure length, volume and temperature accurately in a lab setting.

See how thermometers measure temperature by the molecular movement of the liquid inside.

In three scales and several different types of thermometers scientists can study the temperature of all things.

Take a look at how temperature is measured and what factors affect the air temperature.

How do we determine if we have a fever and have to stay home from school? We bring out the thermometer. What does a thermometer measure and how does it work?

Three activities are presented for fourth grade students to explore how thermometers work.