Biology

Biology is where students watch living systems run: a cell burning fuel, a leaf trading light for sugar. These free interactives let them experiment on life with no prep list, and every one comes with a worksheet, vocabulary cards, and a full NGSS-aligned lesson plan.

Inside the Cell

Zoom into a living animal or plant cell, click every organelle for a real microscope photo, and control the food, water and light that keep it running.

NGSS MS-LS1-2

Photosynthesis Explorer

Turn light, water and CO₂ up and down to find what limits a plant, then read the balanced equation behind it.

NGSS MS-LS1-6 · HS-LS1-5

Reading the Fossil Record

Dig through twelve real Colorado rock layers, brush the dirt off their fossils, and graph how life appeared, spread, died out, and grew more complex.

NGSS MS-LS4-1

Inside the Torso

Lift the skin, muscles, ribs, and organs off a human torso piece by piece, then run it from rest to a sprint and watch the heart, lungs, and gut respond.

NGSS MS-LS1-3 · HS-LS1-2

Toxin Trials

Run fair tests on bean plants and young mice with lead, road salt, weed killer, or a mold toxin, and see how genes and the environment shape growth.

NGSS MS-LS1-5