Each group needs:

• 1 round, 16-ounce (~475-ml) plastic container with lid, to assemble the protection device; such as Tupperware^®; see Figure 4
• 2 pieces of clear plastic tubing, to assemble the prototype protection device; each ~8-10 inches (20-25 cm) long and a bit smaller in diameter than the tubes from the pump and collection jar; see Figures 3 and 4
• Protect the Pump! Worksheet, one per student

To share with the entire class:

• access to a suction pump for testing; either purchase a suction pump similar to this Drive Medical heavy duty suction pump machine at https://www.medicaldepartmentstore.com/Heavy-Duty-Suction-Pump-Machine-p/18600.htm (~$210; prices vary) or borrow one from a home medical supply store; a suction pump usually includes a collection jar and tubing (see Figure 3); if located in the triangle area of North Carolina or near a university with an EWH chapter, contact STEMhealth@ewh.org to inquire if EWH can provide volunteers and/or supplies
• 12-24 inch (30-60 cm) clear plastic tubing with one-quarter-inch inner diameter (ID), from which to cut two pieces that will be re-used each time a different group's prototype protection device is attached to the pump and protection device for testing (see Figure 3); in most cases, expect the one-quarter-inch ID tubing to fit the existing pump and protection device tubes; just slide the smaller tubes from the group's device into the one-quarter-inch ID tubes; otherwise, obtain tubing that fits the pump and collection jar connections
• assorted building materials for teams to fabricate pump protection devices, such as balloons, wooden balls, ping pong balls, plastic eggs, pipe cleaners, wooden craft sticks, rubber bands, wire mesh, moldable putty, such as Silly Putty^® or Play-Doh^®
• tools and adhesives such as scissors, masking tape, glue sticks, hot glue gun/glue sticks
• computer with Internet access to show a short online video clip
• (optional) small, handheld drill, for the teacher to cut holes in the container lids