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Materials and Equipment Advanced Bristlebots Robotics Kit, available from  us. You will need the following materials from the kit: Mini breadboard 2xAAA battery holder AAA batteries (2) Mini vibration motors (2) Toggle switch Mini solar cells (2) 1 inch red jumper wire 1 inch black jumper wire You will also need the following materials, not included in the kit: Identical toothbrushes (2); be sure the longest bristles on the brush...

While testing out the kite designs kids will learn about how lift and air pressure work together to make things fly! Kites have been constructed and flown for thousands of years. They have been used for fun, for military exercises, and for scientific purposes. You may know that Benjamin Franklin used a kite to show that lightning is electricity. There is also historical evidence that in China kites were used more...

Motors that use direct current (DC) voltage are found in many familiar items, such as electric shavers, battery-powered drills, and the fans in laptop computers. DC voltage does not alternate with time. For example, a 9-volt (V) battery has a constant voltage difference between its positive and negative terminals of 9 V. A graph of the voltage at the positive terminal vs. time would be a straight line at 9 V. Alternating current, on the other...

Introduction Though ultraviolet (UV) light can be detected with electronic devices, a simple and colorful way to detect ultraviolet (UV) light is with UV-sensitive beads. UV beads change color when they are exposed to sunlight or to another ultraviolet (UV) light source, but they remain white or off-white when indoors. Because lightbulbs in homes and businesses do not produce ultraviolet light, the UV beads are colorless when kept indoors. But if you take...