Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
이름이 붙는 까닭
🔺 도형의 이름은 «생김새»가 아니라 «성질»이 정해요. 세 각을 바꿔 가며 직각삼각형·둔각삼각형을 직접 만들어 보세요. 두 각을 같게 만들면 마주 보는 두 변도 같아져 이등변삼각형이 되고, 세 각을 모두 60도로 하면 정삼각형이 됩니다 — 정삼각형은 이등변삼각형이기도 하다는 걸 그때 알게 돼요. 🔷 사각형 탭에서는 격자 위 꼭짓점을 움직여요. 윗변을 밑변과 같게 하면 평행사변형, 기울기를 0으로 하면 직사각형, 네 변을 모두 같게 하면 마름모. 그리고 직사각형이면서 마름모인 도형을 만들면 — 정사각형입니다. 이름이 서로 겹쳐 있다는 게 눈으로 보여요. 🎯 마지막은 그려진 도형의 «가장 정확한 이름» 고르기. 이 앱도 코드로 만들었어요 · 리믹스해서 다각형을 넣어 볼까요?
It’s Work Only If It Moves!
📊 What’s the area under a velocity-time graph? It’s the distance traveled! Constant speed forms a rectangle (speed × time), while speeding up forms a triangle (half of that). Seeing how both end at speed 6, yet one travels 18 m and the other 9 m, makes the half easy to understand! 🏋️ Next is work! In science, Work = Force × Distance. If a box doesn’t move no matter how hard you push, work done is 0! Sounds weird after all that effort, but that’s science! 🎢 Finally, a cart rolling down a hill! High up, potential energy is high, turning into kinetic energy as it rolls. Added together, it’s always 80 J at any height! Energy never vanishes, it just transforms. Built with code · Remix it to add your own experiment!
Drawing with Code
🐢 Guide the turtle with code and watch it draw lines as it walks! Combine forward, right, and left, and see how returning to the start closes the shape. 🔁 With loops, choose how many repeats and turn angles to draw triangles, squares, pentagons, hexagons, and stars — and discover that total turns add up to 360 degrees! 🌀 With nested loops, rotate squares to create 4, 6, 8, or 12-petaled flowers. This app was built with code too — remix it and draw your own patterns!
Triangle Congruence Conditions
Is knowing three sides enough to fix a single triangle? 🔺 Choose SSS, SAS, ASA, AAA, or SSA and move the sliders to see all matching triangles appear on screen. Equal angles create three similar triangles, while two sides and a non-included angle form two distinct ones! ⚖️ Identify the congruence condition from the markings, and 🎯 take on the challenge where you must even spot when triangles are not congruent! Supports 7 languages.
Polygon Angle Playground
Explore how polygon angles add up to 180°×(n-2) by splitting them into triangles, find angles of regular polygons, and try the quiz challenge!
Coordinate Plane Transformations
Translate (x+a, y+b), reflect, rotate, and scale triangles! Learn coordinate rules, congruence, and similarity, then take the challenge to guess the new coordinates.
Pythagorean Theorem
Draw squares on a right triangle's sides to see a²+b²=c² as areas, find missing sides with b=√(c²−a²), and play with Pythagorean triples (3·4·5...)!
Angles of Polygons
Change the number of sides to explore interior angles using triangles, and see why exterior angles always add up to 360°!
Trig Ratios sin·cos·tan
Explore how sin, cos, and tan change with right triangle angles, see how (cos, sin) works on the unit circle, and discover the exact values for 30, 45, and 60 degrees!
Shape Area Discovery
Discover area formulas for rectangles, parallelograms, and triangles by cutting, moving, and combining shapes with fun interactive sliders!