Prism Lab vs Pango Memory

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.

SEARCH, REMEMBER AND MATCH THE GHOSTS! Pango Memory is a big memory game designed for children ages 3 to 5. A mysterious mansion, filled with playful ghosts, becomes their playground. In each game, your child explores the rooms, discovers new hiding places, and remembers their location. By matching the pairs of ghosts, they move forward step by step… until the final reward! TRUSTED BRAND, REFERENCE GAME With more than 20 educational apps and 20 million downloads worldwide, Pango is a trusted choice for families. Pango Memory follows this tradition: a simple, smart, and reassuring game designed to develop memory and logic from the age of 3. A RICH AND STIMULATING CONTENT • Explore 11 mysterious rooms in a mansion full of surprises. • Hunt for the ghosts, memorize their hiding spots, and match the pairs. • Find Pango’s friends who are hiding all around the mansion. Each game sparks curiosity, trains memory, and encourages attention and problem-solving. Designed for preschool and kindergarten children, Pango Halloween provides a positive and rewarding learning environment. TRY FOR FREE, THEN UNLOCK THE WHOLE MANSION Pango Memory is free to download, with the first game included. Additional rooms in the mansion can be unlocked through in-app purchases, one by one or as a complete pack, depending on your preference. All purchases are protected by parental controls. And as always with Pango: no ads. WHY PARENTS LOVE PANGO HALLOWEEN • Easy to pick up, designed for little hands. • Perfect for travel, quiet moments, or short play sessions. • 100% ad-free and no hidden purchases, with built-in parental control. • Complies with COPPA and GDPR standards for safe and independent use. THE VALUES OF PANGO For over 15 years, we have been creating games that put children at the center. Games that respect their pace, stimulate their curiosity, and develop their logic… without stress, without ads, without pressure. Because a good game is above all one that helps them grow! Need help? Have a question? Write to us at pango@studio-pango.com or check our FAQ. More about our world: www.studio-pango.com DOWNLOAD PANGO HALLOWEEN… and go ghost hunting!