http://resources.woodlands-junior.kent.sch.uk/revision/science/electricity.htm
Conductors and Insulators In a conductor, electric current can flow freely, in an insulator it cannot. Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them. "Conductor" implies that the outer electrons of the atoms are loosely bound and free to move through the material. Most atoms hold on to their electrons tightly and are insulators. In copper, the valence electrons are essentially free and strongly repel each other.
Kids science: Electricity 102 Science >> Physics for Kids Important things to know about electricity? Conductors and insulators - Conductors are materials that allow electricity to flow easily. Most types of metal are good conductors, which is why we use metal for electrical wire. Copper is a good conductor and isn't too expensive, so it's used a lot for the wiring in homes today. The Fine Art of Electronics {under construction} This tutorial shows you how to make a paper battery holder for coin cell batteries (CR2032 and CR2016). Scroll to the bottom of this page for the video tutorial. Materials and Tools battery holder template printed on cardstock (download PDF here) conductive copper tape (available at digikey and sparkfun)regular tape (e.g. scotch tape or masking tape)scissorssurface mount LEDs (White, Green, Blue, Red, Yellow)3V coin cell battery (CR2032 or the thinner CR2016) Steps
Thunderbolt Kids If we want to keep a record of how we constructed a specific electric circuit, we can take a photo of it. If we do not have a camera, we can remember the circuit by drawing a sketch. Look at the sketch below which Farrah drew of the circuit that you made in the activity with the paperclip switch. That Thing There: Paper Circuit Projects from Maker Faire Detroit 2013 These are the "card" projects that I had at Maker Faire Detroit. I'm dividing the projects in two or three posts because I want to show the circuit paths both with and without notes and I didn't want the length of the post to get too unwieldy. Two quick notes: I took these pictures after Maker Faire and after they were abused examined many times over so they may look a little tired but that's because they are. However, this speaks to the hardiness of these structures. Also, all of these use Jie Qi's ingenious paper battery holder. The link takes you to a page where she generously provides a PDF of the holder to cut out and use as well as a link to a tutorial.
Bristlebot: A tiny directional vibrobot The BristleBot is a simple and tiny robot with an agenda. The ingredients? One toothbrush, a battery, and a pager motor. bristlebots The Evil Mad Science Auxiliary is a public group on Flickr for anyone to add photos that are (at least marginally) related to posts and projects from Evil Mad Scientist Laboratories. Lately some fantastic photos and projects have shown up in the group, so we thought that we should stop and round up a few– not all– of the great things that we’ve seen there. The photos below were taken by their respective owners; click on the individual photos to get the full story. A dark detector built by cyenobite, using a tiny battery holder. Beautiful Joule Thief light by Jimmie Rodgers Bristlebot racing snail Those mad hatters over at Evil Mad Scientist Labs have been at it again. After Windell wowed us with his simple but surprisingly motile “Bristlebot,” Lenore has taken it in a whole different direction with a snail plushie that moves by the directional motion of its velvet fibers. A Velvet Bristlebot Racing Snail – Link Related: HOW TO – Make a Bristlebot a tiny directional vibrobot made from a toothbrush!
Science Party: Fiber Optic Lamp What's a Science Party without Physics, right? To balance out all those other Chemistry experiments, Emily and I decided it would be fun to do a little electric circuitry. We also wanted to stage a fake dissection as a token Biology offering, but fabric frog innards were too time-consuming to sew, so we filed away that idea into the Maybe Another Party category of my brain. Before we settled on classic from-scratch circuitry, we considered the more trendy electric playthings now circulating the internet. Like electric playdough, for instance. We made it, it worked for us, but we couldn't see 16 kids "playing" with it and taking home something concrete at the end of the day to show for it.
Science Party: Bubble Slime Here is Slime #2: Bubble Slime. A different recipe than the Regular Borax Slime, but this one again has just two ingredients: liquid starch (we bought ours at Walmart for about $2) and glue. Like regular slime, you can use either clear or white glue. This slime was a little more tricky to get right; you'd be able to blow a bubble regardless, but too much starch would make it too plasticky to support the bubble long enough to enjoy it and too much glue would make the slime too sticky and soft to handle.Here are our proportions:1/2 cup of clear glueAbout 2/3 cup of liquid starch (straight from the jug) Engineering a Bridge This lesson will involve your students in geometry and measurement as they work as civil engineers to design and build their own bridge. OBJECTIVE Students will be able to: Identify how geometry affects bridge design and function and apply that knowledge to the design and construction of a bridge. MATERIALS Elmer's Foam board, Popsicle sticks, pipe cleaners, bendable rods, Elmer's Glue All, paper, pushpins, weightsEngineering a Bridge PDF SET UP AND PREPAREContent Introduction When engineers design a bridge, they must consider how the bridge will be used, how long and wide it should be, and how much weight it has to hold. There are four main types of bridges:
Animated PowerPoint Templates at PresenterMedia.com ID#18407 WIDESCREEN TEMPLATE A Timeline Toolkit ID#18323 WIDESCREEN TEMPLATE Ribbon Arrows Compare ID#18229 WIDESCREEN TEMPLATE Circle Cycles 100 expériences à faire pour des séances de Science passionnantesLeWebPédagogique Bonjour à tous, On se retrouve souvent démunis face à certaines notions à développer chez nos élèves. On aimerait faire des expériences faciles ludiques et passionnantes pour nos élèves mais où chercher? où les trouver ces fameuses expériences. Comment ne pas perdre un temps fou dans de veines recherches.