Back to school spending is huge and students might not appreciate what it costs to send them back to, essentially, their job of learning. In this activitiy students decide what equipment and supplies are necessary, estimate how much that will all cost, confer with groups or partners to refine their lists, and then research to find out more accurately how much it will probably cost to send them back to school. This activity could be used for students in upper elementary school all the way to high school. It offers an opportunity for kids to get estimating, researching, reasoning, calculating and communication skills honed for the coming year.

# Ghost Whisperer

Let your students play this great game online at Ghost Whisperer Crystal Ball and

- Figure out why it works.
- Construct viable arguments
- Critique the work of others

This activity can be used with any grade level elementary through high school. Younger students might work with patterns, multiples and order of operations. Older students might work with systems of equations to prove how the Ghost Whisperer works.

# When organizing data is confusing? Venn diagrams for Rio?

There must be a lot of Olympians who haven't brought home medals. Probably most of the athletes that went to Rio didn't win anything. We couldn't find any data about this. Can you deduce it?

In this activity students try to calculate data that ** hasn't been publicized** by combining and sorting through information that

*available in order to to draw a new conclusion.*

**is**Which data is important and which is not?

How many athletes have come home from the 2016 Summer Olympics empty-handed?

# Who’s going back to school?

In this investigation students calculate the percentage of the U.S. population (current and historically) that are enrolled in K-12 schools. They are asked to draw conclusions from these variations. Finally, they use their calculations to predict the number of enrolled students in their own state.

A calculation of percent increase (or decrease) of earning power compared to education level is the final activity in this study.

# Olympic Medal Table

Check out the two images of the 2008 summer Olympic medal counts. What do you notice?

**How are the Olympic medal counts and standings determined?**

The Olympic Games are competitions between athletes in individual or team events and are *not meant to be between countries*. The International Olympic Committee (IOC) does not recognize global ranking per country. However, the National Olympic Committee (NOC) **does** give rankings based on the number of medals won. News organizations from around the world **do** release an Olympic medal table, sometimes with possible bias and controversy.

This activity is about determining the fairest ranking method. In this activity students consider how the Olympic medal table, which shows the total Olympic medal count by country, should be determined. Students might create formulas to consider the relative value of a gold, silver and bronze medal. Past formulas for calculating the medal table standings from various Olympic games are analyzed and used.

# Swimsuits – a drag?

To win in Olympic swimming, contestants have to be incredibly fit and have marvelous endurance and technique. Do they also need to consider the science of their motions and their equipment?

Could your swimsuit, swim cap and goggles be holding you back?

This activity is about drag and one method for calculating drag. Students observe what increases or decreases drag and how each element of drag directly, directly squared, or inversely affects a swimmer's performance.