## Reflection: Complex Tasks Experiment: Which surface creates the most friction - Section 5: Wrap Up

Data Analysis and Graphing

It is important to follow through with experiments by having students analyze their data and share results.  Without this reflection piece, students are less likely to retain the information.  We always begin by looking over the data that was collected and explaining what it means.  The data in the chart is more than just a bunch of numbers.  It allows you to compare the distance each car traveled.  Since we are testing which surface creates the most friction, we want to identify which surface the car traveled the shortest distance on.  To analyse the data, students are suppose to look at trial 1 only and see what happened in that test, and circle the one that traveled the shortest distance.  The next step is to move on to trial 2 and circle which one traveled the shortest distance there.  This should be done for all trials and hopefully 2 out of the 3 trials, or all three, will match

I taught students how to complete bar graphs at the beginning of the year when teaching Unit 1.  I left the anchor chart from this lesson up for them to refer to when necessary.   This is used to help them as they begin graphing.  They are also allowed to ask their group members for help if they need it.

Data Analysis and Graphing
Complex Tasks: Data Analysis and Graphing

# Experiment: Which surface creates the most friction

Unit 4: Motion, Forces and Interactions
Lesson 7 of 11

## Big Idea: Students act as scientists to conduct an experiment to test if wood, cardboard, burlap, or carpet produce the greatest amount of friction for a toy car.

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60 minutes