As you prepare to teach this lesson, you may find it helpful to review the Teacher Resource called "Sleep Barriers Background." In this resource, we've compiled information about why/how caffeine and screen time are so disruptive to sleep. You don't have to share this with your students - it's just background to make teaching the lesson easier for you.

This worksheet asks students to calculate the amount of caffeine per ounce in popular beverages and then rank the beverages according to which beverage has the most caffeine per ounce. The bonus question asks for the 3 products with the highest total amount of caffeine.

Have you shown your class the Interactive Presentation yet? If not, start there. If you taught the Interactive Presentation on a different day, then remind students of these key concepts:

• At this age, your body needs 10 to 11 hours of sleep every night.
• Caffeine and screen time are the two biggest reasons that kids don’t get enough sleep.
• Getting enough sleep helps your body grow, helps it recover from daily activity, is important for learning and memory, and allows healing from recovery and illness.

Review the amount of caffeine recommended for children their age: no more than 85 mg per day.

Hand out or project “Caffeine Worksheet.” Demonstrate how to calculate the amount of caffeine in an ounce of each beverage explaining the calculation for the example problem (Rockstar).

• Explain that calculating how much caffeine in an ounce allows each product to be compared.
• Point out that if someone drinks the entire container, they will get the total amount of caffeine found in the container. Ask students to answer the bonus question to see which 3 items have the highest amount of caffeine in the entire container.
• Have students look on the list of beverages to estimate how much caffeine they have in a day.

Bring the whole class together and invite students to share their responses.

If you have time and access to a computer, you can encourage kids to look up other beverages and foods and the amount of caffeine they contain.

• Link to list of beverages and caffeine contained: http://www.energyfiend.com/the-caffeine-database

Ask students if they can think of a beverage that contains no sugar, artificial sweeteners, coloring or added chemicals. The answer is water. Explain that water is a great choice, and the daily recommendation for water is 8 to 10 cups.

Have each student identify at least three beverages they enjoy drinking that do not contain caffeine.