11/22/2016 See Thinkrolls Kings & Queens.

Swipe your way through a series of increasingly more challenging mazes, in this second edition of Thinkrolls, the well-named series that gently introduces properties of matter and physics.

You quickly discover that Thinkrolls do more than roll -- they float, glide and teleport through the themed chapters.

Each chapter gradually introduces a new scientific concept: Accordion presents fine motor skills as children use expansion and compression to open pathways, build bridges and create stairways; Water & Barrel deals with sinking or floating; Egg presents force, acceleration and gravity; Fan contains aerodynamic concepts and fans; Wormhole asks you to use coordinates to get back; Battery deals with electrical and circuits; and Light bulb contains visual memory challenges. There are 117 easy levels for ages 3-5 and 118 hard levels for ages 5-9. Features include the ability to track progress for up to six player profiles. All in all, this is an outstanding collection of challenges.