Build a winch for a simple machines STEM project with kids. Use recycled materials to build a hand crank winch for kids to see how machines work. Recycled STEM also great for Earth Day.
FREE Simple Machines – Printable Mini Book that is perfect for a fun science unit on wedges, screw, levers, inclined planes, and wheel and axles (homeschool science)
is a bit too much glueing, but several on the site are simpler. basic posicle arm and a car.Hydraulic projects for kids!