Learning Resources H20hhh! Water Science Lab Kit. This kit’s 23 repeatable water-themed activities let kids investigate STEM-related career options including marine biology, hydraulic engineering, & climate change analyst. The kit has all the equipment children need to do the repeatable experiments in in their own home laboratory, & comes with a fact-filled Career & Lab Guide. Kit measures 8cm H x 29cm W x 38cm L. Ages 8+.