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Chemistry  
Structure and properties of matter  
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This is a hands-on lab activity about the properties and states of water. Learners will complete activities using different liquids to understand the three states of matter, explain how the high heat capacity and abundance of liquid water makes life... (View More)

In this activity, students will discover how mass is distributed in the solar system and a galaxy by using kitty litter. Students compare the distribution of mass in a solar system to the distribution of mass in a galaxy. This is Activity 6a in the... (View More)

This is an activity about the correlation between annual precipitation and plant productivity in different Earth biomes. Learners consider water evaporation, solubility and abundance relative to life on Earth and relative to finding evidence for... (View More)

This is a tri-fold brochure about high energy electrons in space: how they are produced, when and where they occur, and how they can affect us. Learners can use this brochure to supplement instruction on related topics and to access other web and... (View More)

Audience: High school
Materials Cost: Free

This is a hands-on lab activity about seawater density. After developing a hypothesis, learners will conduct a simple investigation of density. They will discuss changes in density observed and describe how salt affects the density of water.... (View More)

This is a hands-on lab activity about the chemical composition and conductivity of water. Working in groups, learners will: conduct an experiment involving the process of electrolysis, prepare an experiment to better understand the process of ion... (View More)

Keywords: Electrolytes; Salinity
Audience: High school
Materials Cost: $1 - $5 per group of students

This is a hands-on lab activity about seawater density, specifically the relationship between density of fluid, weight of an object, and buoyancy. Learners will develop hypotheses and observe a demonstration of density to understand its role in... (View More)

In this demonstration, a plastic soft drink bottle is used to demonstrate properties of gases and liquids with respect to temperature and pressure. Calculations using the formula for the Ideal Gas Law are included. The resource is from PUMAS -... (View More)

This lesson plan focuses on the concepts of atomic number, mass number, isotope, and nuclear atom. A student quiz is included as an assessment instrument. This resource is from PUMAS - Practical Uses of Math and Science - a collection of brief... (View More)

Keywords: Neutrons
Audience: High school
Materials Cost: Free per group of students

This activity has two purposes: challenge the learner to develop a procedure for investigating a research question and to learn more about factors affecting the dynamics of air in motion. It demonstrates that warm air and cold air differ in weight... (View More)