## Reflection: Adjustments to Practice Hydrosphere: Water on Earth - Section 2: Warm Up

Improving the Globe Toss Game

I designated one student to be the data collection student which I realized did not work out well.  Instead of doing 100 tosses, we ended up with 110.  This lead to some confusion when trying to determine the percent.  I do not want the focus of this lesson to steer away from the percent of water on Earth which seemed to happen during this portion.  The purpose in doing 100 tosses is so that I have the opportunity to review a previous math concept, and so the conversion can be done quickly.

To improve the globe toss game, I would either assign one student to be the data collection person, and another person to be the counter.  This would mean that there is one student counting how many tosses are made so that they make sure we stop at 100.

Another option would be to divide the class into 5 groups of 4.  Each group would be responsible for doing 20 tosses and recording it on the Globe Toss Data Collection Sheet.  Then all groups would share their results and we could add it up to get 100 tosses.  Keeping track of just 20 tosses would be easier than 100 tosses so this may be more practical.  I would need 5 globes to make this work but every student would get the opportunity to catch the ball several times in this format.

Adjustments to Practice: Changes to Improve Globe Toss Game

# Hydrosphere: Water on Earth

Unit 7: Earth's Systems
Lesson 7 of 14

## Big Idea: Students will research how much water is available on Earth in various reservoirs and graph the quantities.

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Standards:
60 minutes

### Jennifer Sallas

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