Wonders of Water Science Project - Making Clean Water: After learning about pollution and water conservation, you could have your Brownies split into groups and make clean water that has been "polluted" with dirt and other sediments.
Grade 5 Weather Unit - Creating your own rainstorm.this is so cool! All you need is a clear container, water, shaving cream, food coloring and droppers. Have kids make predictions by drawing what they see and think will happen.
Maybe a "build a solar system" activity for kids Whether you are diving into an astronomy unit in your homeschool / classroom or your child just has a natural curiosity about space, here are 18 Solar System Projects your kids will love!