In these subject and verb agreement worksheets, students read the sentence and use the present tense of the verb forms to complete each sentence. Students practice subject/verb agreement with the activity.

This lesson teaches students to distinguish between physical and chemical changes. Students will view an interactive slideshow presentation and then conduct experiments to discern physical and chemical changes.

A laboratory experiment where students classify matter into a homogenous mixture, heterogeneous mixture, solution, or pure substance. Also students will test for physical and chemical changes.

Second graders explore the concept of law of conservation of mass.

In this activity, students will observe another aspect of a chemical change which is a change in temperature. In this reaction, students will experiment with an endothermic reaction.

[Free Registration/Login Required] Find out about the physics involved in the sport of archery. Watch this animation, then experiment with your own bow and arrow to see how the data changes.

Join a group of middle-school students on a visit to a laboratory at the Massachusetts Institute of Technology, where they experiment with "mystery mud" and learn about the relationships between magnetism, particle motion, and changes in...

Two experiments where students investigate with uncooked eggs. In the first investigation, they explore how to remove the eggs outer shell while keeping the rest of the egg intact. In the second, students attempt to shrink the egg...

Learn about absorption in this hands-on science experiment. Includes full list of materials, procedures, and scientific explanation of what happens to different types of beans as they soak in water in a test vial.

If the speed of light remains a constant then time and distance change. Oh, it can be confusing! This text will help clear up the confusion. Discussion questions should serve to reinforce comprehension.and exercises

Step into Dirtmeister's Science Lab as he explores the challenge question: "How can you force a physical change in matter?" Learn about matter, make your predictions and then do the experiment.

Instructions for how to safely create a chemistry set using basic ingredients found around the home. Provides two experiments to try, one involving a physical change and the other a chemical change.

An easy experiment for demonstrating and exploring molecule movement requiring common household items: two glasses, two dark colors of food coloring, and warm and cold water. A few variations to the experiment will have students using...

This lab is designed to have students investigate the relationship between the distance from an explosion and the time it takes the sound of the explosion to reach the observer. The temperature of the air can be changed by changing the...

This lab is designed to have students discover the relationship between the work that is done and the changes to height that occur to an object. Students can adjust the amount of energy added to the object. They can test five different...

A model organizes what we think we know about something in order to predict how it might behave in the present, future, or past as well as how it might respond to external influence. Models are especially useful when direct, controlled...