In this activity, students will model the changes that are caused by weathering and erosion.

In this activity, students will have the opportunity to demonstrate how soil formation is related to weathering.

In this series of quick hands-on activities, students will demonstrate that heat is produced when objects are rubbed together. As assessment, students will identify and draw examples that illustrate this concept.

This activity is intended to introduce students to the difference between physical and chemical changes in matter. Students will investigate the interactions of antacid tablets, water, vinegar, and bromphenol blue indicator to investigate changes in matter; observations will be recorded on a provided note sheet. Several ideas for assessment are also included.

With this resource, the student's goal is to determine how earth's tilt is related to the difference in light strength.

In this outside activity students will measure the shadow of an object to show how the angle of the sun changes over the period of a school year.

With this activity, students will figure out what happens because the earth is tilted.

This resource is an activity that will answer the question, "Does Earth have to tilt at a specific angle to keep the seasons, as we know them?"

Students will use a model to demonstrate the earth revolving around the sun.

This resource is a demonstration that uses a model to demonstrate earth revolving around the sun.

This resource is a list of terms and definitions related to the seasons.

This resource will allow students to look closely at how Earth's tilt and revolution around the sun are changing what season we have on earth.

In this lesson, students participate in activities that will teach and instill a respect for the American flag, the Pledge of Allegiance, Liberty Bell, Statue of Liberty, the bald eagle, and other patriotic symbols.

In this lesson, students will simplify numerical expressions using the correct order of operations.

In this lesson, students will simplify numerical expressions using the correct order of operations.

In this activity students will investigate four different ways fossils are made in sedimentary rock: impression, trace, preserved, and mineral replacement (petrification) fossils.

In this lesson, students will predict and test everyday objects as to whether they sink or float. They will test four of the same size cubes of wood, clear plastic, milky plastic and aluminum, and find that two sink and two float. Students will then test the same four types of cubes but in smaller sizes. They will find that the smaller samples sink or float as their larger samples did.

This resource will allow students to understand how the appearance of the night sky changes with the seasons.