2.23 Test and Observe the Effects of a Variety of Lubricants Used in Agriculture
This is Lesson 23 (“Test and Observe the Effects of a Variety of Lubricants Used in Agriculture”) from the Grow Your PALS Program Guide, part of the National FFA Mentoring Program’s Agricultural Mechanics and Technology unit. In this small-group, hands-on lesson, students conduct timed experiments moving gelatin cubes between bowls using different liquids (a control, detergent, water, and vegetable oil) to test and observe how lubricants reduce friction. The lesson reinforces the concepts of friction and lubricants through discussion, application activities, and evaluation questions.
At a glance
- Learning objectives
-
- Test and observe the effects of a variety of lubricants.
- Time required
- Instruction time for this lesson: 30 minutes
- Materials
-
- Gelatin cubes made in advance (4 envelopes unflavored gelatin dissolved in 2 cups hot water, poured into oiled 9×12-inch pan, refrigerated 3-4 hours, cut into 1-inch cubes)
- Two bowls
- Liquid dish detergent
- Water
- Vegetable oil
- Measuring cup
- Watch with secondhand or a timer
- Notebook paper
- Writing utensil
- Unit
- Agricultural Mechanics and Technology
- Lesson Type
- Small Group
- Precepts
- A. Action — A8. Evaluate and reflect on actions taken and make appropriate modifications
- Key Terms
- lubricant, friction
- Resources
- None
Downloads & Links
Aligned Standards
National Standards
- NS.K-4.2Physical Science