Each student needs:

• 1 NASA eClips Engineering Design Packet (digitally or as a hard copy)

Each group needs:

• 1 laptop or tablet with internet access
• 5 235 – 355 mL (8 – 12 oz) plastic cups
• 1 3 ft cotton string
• 1 thumbtack or pushpin
• 1 stopwatch or timer
• 1 permanent marker
• multiple containers for pouring water (e.g., pitchers or measuring jugs)
• 1 tub for catching water
• 1 scissors
• 1 roll of duct tape
• paper towels or rags for cleaning up spills
• access to tap water or another water source
• (optional) tape (masking or clear)
• (optional) pipe cleaners
• (optional) binder clips/clothespins

For the entire class to share:

• whiteboard and dry erase markers
• 1 laptop or tablet with a projector and internet access
• access to websites for learning more about NASA technologies and spinoffs:  https://spinoff.nasa.gov or https://www.nasa.gov/technology
• access to NASA eClips video Our World: Recycling on the International Space Station (https://science.nasa.gov/eclips/videos/recycling-on-the-international-space-station)
• access to online water calculator such as the EPA WaterSense calculator (https://www.epa.gov/watersense/watersense-calculator)
• (optional) access to additional information on water clocks:  https://www.childrensmuseum.org/stories/tell-time-water-clock
• testing station(s): Note: Determine how many testing stations will be in the classroom and determine how you want to set up each testing station (see images of sample testing stations). Recommended materials per testing station:
• 1 stand
• 1 hook or paper clip for suspending clocks being tested (a paper clip unbent to form an “S” shape works well)
• 1 large basin for catching water (for test site)
• access to tap water or another water source
• multiple containers for pouring water (e.g., pitchers or measuring jugs)
• paper towels or rags for cleaning up spills

For the teacher:

• (optional) Engineering Design Educator Implementation Guide