Students try to get things to move, first without a ramp, then with a piece of cardboard that can be used as a ramp.

**How can you get it to move?**

(Part #1) Give students a variety of objects. Ask the students to try different ways of moving them.*Note: some teachers prefer to let students experiment with the cardboard alone and don’t introduce other materials (as in the video above)*.**Class Meeting:**

Gather the class to discuss the ways they came up with. They have probably thought of pushing and pulling, possibly blowing, pushing with a stick, etc. Chart with the students how they were able to get the objects to move. (Movement can be sorted into two categories, pushing and pulling.**How can you get it to move?**

(Part #2) Provide the large sheets of cardboard, but do not suggest how they might be used (as ramps) – some students will probably come up with this idea on their own. Students may also use the cardboard in a see saw motion (essentially creating two ramps).**Class meeting:**

Gather the class to discuss the ways they came up with. If anyone has thought of using the cardboard sheet as a ramp, ask students:- How is this different from moving it by pushing or pulling directly?

- If nobody has come up with this idea, ask:

*How can you get it to move “by itself” – while you are not touching it?*

- If nobody has come up with this idea, ask:

- How is this different from moving it by pushing or pulling directly?
**Science Notebook:**

Draw and write about what you did to make something move. List the materials you used.**Outcomes**- Students explore methods of initiating motion of an object, and recognize that something “extra” is needed to make it go.
- The “extra” needed to make something move could come from a person, in the form of a push or pull. It could also be made to move by putting it in a place where it “wants” to move, such as at the top of a ramp or slide.

- Students explore methods of initiating motion of an object, and recognize that something “extra” is needed to make it go.