STEM Challenge Riddles for Middle School Innovators

I prove a 3-4-5 triangle is right. What am I?

I organize experiment data in rows and columns. What am I?

I combine code, gears, and servos. What am I?

I light an LED when current flows. What am I?

I compare controls and variables. What am I?

I measure angles in geometry. What am I?

I launch with stored elastic energy. What am I?

I create prototypes layer by layer. What am I?

I speak to computers with ones and zeros. What am I?

I keep bridges strong with triangles. What am I?

I find steepness from coordinate pairs. What am I?

I test cleaner power from sun or wind. What am I?

I check power, logic, and sensors. What am I?

I use spheres and string to show orbits. What am I?

I turn team ideas into a pitch. What am I?

I have mass, speed, and a formula with one-half. What am I?

I move heat through direct touch. What am I?

I float when upward force wins. What am I?

I change one variable at a time. What am I?

I make a bridge lighter but stronger. What am I?

I store instructions for a robot. What am I?

I repeat steps until the result improves. What am I?

I show data with bars, dots, or lines. What am I?

I am the first test version of an invention. What am I?

I protect an egg during a drop. What am I?

I turn sunlight into electricity. What am I?

I separate mixtures by size. What am I?

I measure tiny objects in millimeters. What am I?

I ask what failed and what changed. What am I?

I'm a simple machine with a flat surface tilted to help lift heavy loads. What am I?