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# Newton's First Law of Motion: Inertia and Unbalanced Forces

This educational wallsheet illustrates Newton's First Law of Motion. In this experiment, students will discover the properties of inertia and motion, and see how they have very important real-life applications. The activity is complete and... (View More)

Keywords: NSTA2013
Audience: Middle school, High school
Materials Cost: Free

# Constructing a Model of Surface Ozone

Students will work in teams to create visual models to assist in understanding the volume of surface ozone in the air. Students construct cubes of different volumes and compare them to get a feel for parts per million by volume and parts per billion... (View More)

# Cosmic Classifier

This interactive, online activity allows students to examine the Hubble Deep Field image and simulate the process astronomers have gone through to classify the objects in it. Students classify select objects in the image based on observable... (View More)

# Water Detectives

In this introductory classroom activity, students exercise their scientific skills of observation and deduction as they use their senses and simple laboratory assays, such as pH indicator paper, to identify mystery pollutants in water samples.... (View More)

# A Sense of Balance: Activity 2

In this activity, students create a reservoir model using hoses, a bucket, a flat pan, and water, to understand the inputs and outputs of a local watershed or reservoir. The resource is supported by teacher background information, assessment... (View More)

# How Do Higher Temperatures Affect the Water Cycle?

This demonstration shows that an increase in temperature will speed up the water cycle. One outcome will be an increase in rainfall. A second outcome will be the increase in total evaporation of water and subsequent drought. Materials required... (View More)

# Tilted Earth

This is an activity about how the Earth's axial tilt causes its seasons. Learners will make a model using polystyrene spheres and a light bulb to represent the Earth-Sun system, showing why the tilt of the Earth’s spin axis causes its seasons due... (View More)

Keywords: NSTA2013
Audience: Middle school
Materials Cost: \$1 - \$5 per student
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