Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
1cm 칸이 몇 개
🟦 넓이가 뭐냐고 물으면 «가로 곱하기 세로»라고 답하기 쉬워요. 하지만 진짜 뜻은 «1cm 짜리 정사각형이 몇 개 들어가는가» 랍니다. 칸을 깔아 세어 보면 곱셈이 왜 답이 되는지 보여요. 가로만 2배로 늘리면 넓이도 2배, 두 방향을 다 늘리면 4배가 되는 것도 직접 확인할 수 있어요. 🔁 그리고 아이들이 가장 많이 틀리는 것 — 1m는 100cm인데 왜 1m²는 100cm²가 아니라 10000cm²일까요? 가로로도 100배, 세로로도 100배라서 100 × 100 이에요. 큰 칸 하나를 확대해 그 안이 또 격자인 걸 보면 «제곱»의 뜻이 잡힙니다. 🎯 마지막은 직접 바꿔 보기. 이 앱도 코드로 만들었어요 · 리믹스해서 부피 단위를 넣어 볼까요?
Big Numbers
Not just one ant, but 325 million! 🔢 Tap 9 place-value slots to build big numbers yourself. Color-coded blocks show how numbers are read together. 🪜 Skip-count from 10,000 up to 100 billion, with changing digits highlighting as you add or subtract (even up to trillions!). 🎯 Challenges include place value, picking the larger number, and guessing the next number. Compare values carefully from the highest place! Supports 7 languages.
Units of Length
Ants are 5mm, marathons are 42km 📏 Place objects on a 20cm ruler and read the millimeter ticks — object tips snap right onto the lines. 🔄 In Unit Converter, see the same length in mm, cm, m, and km all at once. An ant in km is 0.000005km! That’s why choosing the right unit matters. 🎯 In Challenges, convert units, pick the best unit, and guess which is longer — comparison bars are hidden, so convert first, answer, then check with the bars. Supports 7 languages
Weight & Capacity Playground
Explore weight and capacity with 1kg, 100g, 1L, and 100mL blocks, discover that 1kg=1000g and 1L=1000mL, and master unit conversions through fun challenges!
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!
Create Graphs
An elementary math app where you learn to display and read data! Create a bar graph of favorite fruits to find the most and least popular, change it to a pictograph to see what 1 picture represents, and draw a line graph of temperatures to track changes. Use −/+ and dots to watch the graph update instantly!