the strength it needs to stand up to heavy use.
11. Now use your drill to make a series of V-inch
holes along the underside of the 5-foot cross
section. Start with about eight evenly spaced holes.
12. Attach the hose and see how it works. If the
water seems to be exiting the holes under too
much pressure, turn down the water or add a few
13. To play, introduce children to the car wash and
supervise the fun. We promise you will not need to
explain how to use this piece of equipment.
Storage In the off season, store this project in a corner of
the garage. It can also be stored under a deck or
left outside since it is completely weatherproof.
Children will learn the same things they learned
with the last water play project: cause-and-effect
relationships, ﬂuid dynamics (how water acts), and
logical thinking, along with the motor skills and
social skills that come with such activities. This is
a wonderful sensory activity as well. They will also
learn that cool water feels wonderful on their hot
skin during a sunny afternoon.
Variations Introduce play money or car wash tokens so
drivers can “pay” for their car wash.
Add some buckets, rags, and sponges for more
Squirt a bit of dish soap into the structure before
connecting the hose to add some suds to the fun.
Holes can be placed along the top or sides of the
horizontal pipe for a different effect.
Have children plug holes with their ﬁngers and
see what happens.
Add a hole or two to the 4-foot uprights so the
water comes out horizontally as well as vertically.
Use the faucet to vary the water pressure.
You can make it drip or spray from the holes
depending on the faucet setting.
Activities—Learning Equipment to Build