The World's Biggest Book of Brainteasers & Logic Puzzles
$5.29 - $5.59
Science fusion Grade 4
$5.39 - $6.09
Super Sensational Science Fair Projects
$5.49 - $15.89
Hsp Science Grade 3
$4.79 - $5.69
Classic Optical Illusions
$5.79
Optical Illusions: Challenge Your Visual Thinking!
$4.89
The Ultimate Lateral & Critical Thinking Puzzle Book: Master Your "Thinking-Outside-The-Box" Skills (Puzzle Books)
$5.09 - $5.79
Critical Thinking Puzzles
$3.59 - $5.69
Great Critical Thinking Puzzles
$4.69 - $5.59
Optical Illusion Magic: Visual Tricks & Amusements
$5.49 - $6.29
Science (Grasshopper) Level 6
$10.09
Optical Illusion Experiments
$5.69 - $6.89
HSP Science
$8.59
Awesome Experiments in Electricity & Magnetism (Awesome Experiments)
$6.29 - $7.99
Giant Book of Mensa Critical Thinking Puzzles
$5.09
Awesome Experiments in Force & Motion (Awesome Experiments in)
$7.39
Visual Thinking Puzzles
$4.49
Harcourt Science Grade 1 California Edition
$5.79 - $6.09
Giant book of challenging thinking puzzles
$5.79 - $6.69
Hsp Science Grade 2
$6.19 - $6.49
Giant Book of Optical Puzzles
$5.49
California Science Grade 2
$9.09
Hsp Science Grade 1
$5.89
The Ultimate Clever Puzzle Book
$5.39
Addison And Wesley Science Insights: Exploring Matter And Energy
$16.09
Eye-Popping Optical Illusions
$7.39 - $15.89
Simple Optical Illusion Experiments With Everyday Materials
$9.39
California Science
$6.89 - $7.99
No-Sweat Science: Optical Illusion Experiments (No-Sweat Science)
$6.09
Challenging Critical Thinking Puzzles
$5.69 - $6.89