Unit: Motion and Forces.
Grade Level: 6th
Estimated time requirement: 2nd of 2--50 minute class periods.
Summary: This lesson reinforces the concepts of velocity and acceleration.
Students will have a better understanding of velocity and acceleration using hands-on trials with the CBR units and calculators.

Objectives: 1. Identify when motion occurs.
2. Compare speed, velocity, and acceleration.

TEKS: 6.1A Demonstrate safe practices during lab investigations.
6.2A Plan and implement procedure including asking questions, formulating testable hyppotheses, and using equipment and technology.
6.2B Collect data by observing and measuring.
6.2C Analyze and interpret information to construct reasonaable explanations from direct and indirect evidence.
6.2E Construct graphs, tables using tools to organize, examine, and evaluate data.
6.4 Use a variety of tools.
6.4A Collect, analyze, and record information using tools including timing devices, calculators, and probes.
6.6A Identify and describe the changes in position, direction of motion, and speed of an object when acted upon by a force.
6.6B Demonstrate that changes in motion can be measured and graphically represented.

Assessment: Successful plotting of distance/velocity graphs. Students able to take apart a graph and evaluate what is happening in each segment.
Completion of activity.

Materials: TI 73 Graphing calculator, TI Viewscreen 73, 2nd part of activity "Matching Velocity vs. Time Graphs, TV, computer, downloaded video clip, internet access.

Resources:unitedstreaming.com video clip, activity 33 parts III and IV "velocity vs. time graphs" Middle School Science with Calculators.

Prior Knowledge/Skills:
Procedures:
1. Review pages 108-109, velocity and acceleration.
2. * Show students video clip:"Speed, velocity, acceleration, and deceleration" (4:15) from unitedstreaming.com.
3. Students complete velocity vs. time graphing activity that was started on Day 1.

*Download "Speed, velocity, acceleration, and deceleration" video clip.

Modifications: Prior grouping of students to save time.

Technology Infusion:
TI 73 calculator, CBR units, TI viewscreen, computer, downloaded video clip.

Video clip cited: 1."Speed, velocity, acceleration, and deceleration" from Basics of Physics: Exploring the Laws of Motion.(4:15) Retrieved Oct.12,2004 from Discovery Enterprises. LLC: www.unitedstreaming.com

Cultural Connection:

Family Connection: