1. (1) (3) (2) (4) (5) Steps 4 and 5 are the steps of the EDP where we test our prototypes 1 SPI 0807.T.E.1 to 2: (Eng. Des. Process) SPI 0807.Inq.2 (Sci Tools & Procedures) SPI 0807.Inq.4 (Cause and Effect) SPI 0807.12.4 (Mass and Weight) Quick Review Use the right arrow button to advance through the presentation

2. In an experiment… …you measure things with the metric system using tools such as: 2 Scientific Tools  …a triple beam balance -measures mass SPI 0807.Inq.2 (Tools and Procedures -unit of measure: grams Don't forgot to write you mass measurements in grams today! Quick Review

3. In an experiment… …you measure things with the metric system using tools such as: 3 Scientific Tools  …a metric ruler or meter stick -measures length SPI 0807.Inq.2 (Tools and Procedures -unit of measure: centimeters Quick Review Don't forgot to write you length measurements in cm today!

4. Engagement: Remember the Lego activity that we did where we rolled our Lego cars down the ramps? Well our little Lego-car driver’s protested that this activity was unsafe for them since the cars did not have any brakes. So they asked if we could install some brakes on the cars. That is what we will do today. Start thinking about how you could construct some kind of braking device on your Lego cars. Notes 4 Uphill Struggle Experiment SPI 0807.T.E.1 to 2: (Eng. Des. Process) SPI 0807.Inq.2 (Sci Tools & Procedures) SPI 0807.Inq.4 (Cause and Effect) SPI 0807.12.4 (Mass and Weight)

5. Materials: 1 lab journal sheet per student ( I will pass these out) 1 car with brake illustration/handout (is orange colored) 11 work stations 1 triple-beam balance per work station 4 ramps Numerous meter sticks and rulers 1 Lego kit per work station 1 weight per Lego kit Notes 5 SPI 0807.T.E.1 to 2: (Eng. Des. Process) SPI 0807.Inq.2 (Sci Tools & Procedures) SPI 0807.Inq.4 (Cause and Effect) SPI 0807.12.4 (Mass and Weight)

6. Activity:  Construct a 4-wheel Lego car with a brake per the provided illustration (see the orange handout)  Measure the mass of the black weight (in grams)  Measure the mass of the car without the weight (in grams)  Add the mass of the car and the weight together (in grams)  Confirm that the car will roll forward  Turn the car around backwards, and place it at the top of the ramp. Observe to see if the car rolls backwards or not.  If it rolls backwards, measure how far it rolls before it stops in (in centimeters)  Complete the journal work sheet (see other image on screen)  Start with your prediction Notes 6 SPI 0807.T.E.1 to 2: (Eng. Des. Process) SPI 0807.Inq.2 (Sci Tools & Procedures) SPI 0807.Inq.4 (Cause and Effect) SPI 0807.12.4 (Mass and Weight)