Caballo de Troya 5: Cesarea / Trojan Horse 5: Caesarea (Spanish Edition)

Thames & Kosmos Newton’s Apple: Tightrope-Walking Gyrobot | Build a Gravity-Defying Robot | Explore Forces & Motion, Physics of Gyroscopes | Ages 8+ w/Help; 12+ for Independent Play

DIY Seismograph Alarm Model Assemble Toy Physics Scientific Experiment Tool

Thames & Kosmos Optical Illusions STEM Experiment Kit | 35 Amazing Optical Experiments | Explore Physics of Light, Optics, Perception | Includes 3D Glasses | Build a Camera Obscura | for Ages 8+

Kinetic Art Perpetual Motion Machine，Newest Model No Sound Rolling Ball Perpetual Marble Machine, Science Physics Gadget ，Decompression Cycle Ornament，Office Home Ornament

Klutz DIY Rainbow Catcher STEM Kit

Learning Resources Wacky Wheels STEM Challenge, Science STEM Game, 15 Pieces, Ages 5+

Thames & Kosmos Physics Pro (V 2.0) Science Kit | 96 Page Color Manual | 31 Experiments | Advanced Physics Education Kit | Parents' Choice Silver Award Winner

TEDCO Light Crystal Prism