Forces and Motion Lesson

Standards:

TEKS Science: 6.3D, 6.8B, 6.8D, 8.3D, 8.6A, 8.6C CCRS Science Standards: VIII-C1, VIII-C2

 

Lesson Objectives:

  1. Students will be able to identify when an object is being acted upon by unbalanced forces. 
  2. Students will be able to predict the change in motion when a force is applied to an object.
  3. Students will be able to demonstrate an understanding of how unbalanced forces relate to the total force applied to an object.
  4. Students will be able to utilize Newton’s Law of Inertia (velocity remains constant unless acted upon by an unbalanced force) to describe the motion of an object when acted upon by an unbalanced force.
  5. Students will be able to identify the advantages and limitations of using the “Force and Motion” PhET simulation.
  6. Students will be able to identify the contributions of Galileo Galilei and Isaac Newton to the study of motion.

Lesson Overview:

Students are introduced to the effect of forces on the motion of objects. The students view videos of forces in action and identify the forces present. The contributions of Galileo Galilei and Sir Isaac Newton are briefly discussed and related to the motion of objects observed every day. The students observe a demonstration of Newton’s first law of motion, then transition to the Forces and Motion Basics PhET computer simulation to investigate the effect of force on motion. The students observe the effect of friction on the motion of an object, as well as, the theoretical case without friction. The students are also introduced to the relationship between an applied force and the acceleration of an object. Students consider the advantages and disadvantages of using a computer simulation to model the motion of an object. To elaborate on the material, the students use blocks and a piece of cardboard to model how buildings collapse during earthquakes. The October 23, 2011 earthquake in Turkey is discussed and students hypothesize how the movement of the earth can affect building structures. A connection is made to careers in engineering.