At least 20 times in life’s history — and possibly several times as often — single-celled organisms have made the leap to multicellularity, evolving to make forms larger than those of their ancestors. In a handful of those instances, multicellularity has gone into overdrive, producing the elaborate organisms known as plants, animals, fungi and some forms of algae. In these life forms, cells have shaped themselves into tissues with different functions — cells of the heart muscle and cells of the bloodstream, cells that hold up the stalk of a wheat plant, cells that photosynthesize. Some cells pass their genes on to the next generation, the germline cells like eggs and sperm, and then there are all the rest, the somatic cells that support the germline in its quest to propagate itself.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.