Prism Lab vs Puppet Pals 2

Prism Lab is an optics bench in your pocket. Put a piece of glass on the graph paper, aim the laser at it, and watch the light bend, bounce and split, with every angle measured for you. It follows the experiments from a school ray box kit, so it works as a companion to the lab or on its own. THE BENCH • Nine pieces: a simple surface, 45-90-45 and 60-60-60 prisms, rectangle, square, semicircle, convex and concave lenses, and an optical fibre. • Drag the laser and where it aims. The angles of incidence, refraction and reflection update as you move. • Tap any angle and type the value you want. The laser swings there so you can see how it gets to it. • One, three or five parallel beams, to find the focus of a lens. MATERIALS • 119 materials for the piece and for what surrounds it: glasses, liquids, gems and gases, each with its refractive index. • The critical angle is worked out for every pair, and you can see total internal reflection happen. COLOUR • White light opens into a spectrum, because each colour bends by its own amount. • 77 materials use published dispersion data. For the rest the app tells you the spread is an estimate. • Red, yellow, green, blue and violet lasers, in the width you choose. LIGHTS OFF • Turn the lights off and the beams glow, as in a dark classroom. NO STRINGS • No account, no ads, and no data collected. • Everything is free. If you find it useful you can buy the developers a coffee. In English, Spanish and French, for iPhone and iPad.

• “Puppet Pals is an amazing app that lets you create animated cartoons.” -David Pogue (NewYork Times) Children unlock creativity with this easy to use (but hard to put down) interactive puppet show! Even young children can create high quality cartoons from their imaginations. Kids can even star in the show along side the built-in characters! Teachers: Engage students by allowing them to act out historical events, practice language skills, or deliver a killer book report. The cartoons that kids are making have delighted thousands of teachers and parents around the world - let yours be next to experience this award-winning digital addition to your classroom. The finished projects are easily shared to be watched by others (share via email, Facebook, or simply copy the video file to your computer and distribute how you see fit - Hint: students love to see their work displayed on a classroom blog). • Create short instructional videos (in any learning area) • Storytelling, Reports, Historic Retells • Help reluctant public speakers present to the class • Help foreign language or ESL students practice their fluency & language skills • Brainstorming or storyboarding ideas and presentations Characters chosen from standard curriculum allow kids to fully engage with content - not even realizing they are actually learning valuable lessons that will stay with them for years to come!