Math wall---"How Tall am I?" Flower Sprouts with the kids' names on the flowers. This would be great as a beginning and end of the year activity! I can just imagine how much the kids would giggle over their comparisons :-)
Молния в цилиндре - красивый световой химический опыт! - YouTube
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.