Discovery #MINDBLOWN test tubes science 14 piece kit with 3 educational experiments is an easy-to-use science kit with materials for conducting 3 different test-tube experiments. Each activity demonstrates real scientific principles to engage young learners in fun tactile ways. • Product dimensions - 7.5" L x 2" W x 9.25" H • Product weight - 0.94 lbs • Set includes - 1 test tube rack 3 test tubes 1 plastic tweezers 1 jelly crystals 1 super ball mold 1 super ball powder 1 bottle of disappearing ink 5 PH strips • Turn your home into a science lab - become a real scientist with the discovery mind blown test tubes science kit • Make a bouncy ball - watch molecules link together by creating your own bouncy ball with the included mold and materials • Write with disappearing ink - watch your writing magically appear and then disappear with the blue disappearing ink (actually it's not magic – it's science) • Make learning fun - children learn and retain knowledge more effectively with hands on activities the test tube science kit's three unique experiments provide hours of educational hands on fun • While the instruction manual explains the science behind all the phenomena your children will observe • Age 8 to 11 years • No battery needed • Warning - this set contains chemicals that may be harmful if misused read cautions on all packaging carefully not to be used by children except under adult supervision