National Geographic Rock Tumbler Explorer Series Characters Speak and Spell was the

Speak and Spell was the first educational toy designed to help children learn to spell over 200 commonly misspelled words using a speech synthesizer

It features an English and a French mode to help them learn their shapes

This glorious pop-up book is a fitting tribute to the entire Star Wars saga

Classic physics becomes a raceway adventure with the riveting game of Downhill Derby

National Geographic Rock Tumbler Explorer Series Characters Speak and Spell was theIt's all about what's on the inside. Ordinary rocks turn into polished gemstones, showing kids that earth's treasures are all around us. High quality, leak proof tumbling machine, polishing grits, learning guide and more are included. From Blue Marble, for ages 8 yrs teen.