Brand: E-Blox. MPN: CB-1047. ENHANCES CREATIVITY & IMAGINATION: Through the joy of play and discovery, children can innovate, integrate, and be inspired as they plug-together different bricks and modules to create a variety of toys and games that light up and make sounds.   7 PROJECTS: Learn about polarity. Build 7 different projects that all teach STEM. Lesson 1 – Electricity & Circuits Lesson 2 – Generators Lesson 3 – Light Lesson 4 – Series & Parallel Connections   COMPATIBILITY: Directly compatible with other brick building construction sets and other major brick brands. Not your ordinary blocks!   STEM TOY: An excellent introduction to Green Energy. Learn about voltage, current and how circuits with LEDs and generators work.   LEDS: Use the hand crank to generate electricity and light the 3 LEDS. Includes three (3) LEDs - Heart (red), Star (blue), and Blue/Red Bi-Directional. No batteries required!