神經元訊號

一個小型神經網絡以 3D 繪出，包括三個輸入、兩個各有五個神經元的隱藏層，以及兩個輸出。學生移動輸入滑桿，觀察神經元顏色、連接權重和兩個輸出如何改變。

A leg and a hand show the path of a reflex. Students click the hammer or the hot plate and watch the signal travel through neurons and the spinal cord in slow motion.

Explore an adult male reference body in 3D. Reveal 14 anatomical systems, search thousands of named structures, isolate organs, and pull 2,209 modeled pieces apart to see how the body is organized.

Explore the head and neck in 3D: 643 source meshes across 14 layers, 47 facial and masticatory muscles, and 77 drawn nerves, vessels and glands the source scan omits. Open any tooth onto its own pulp canal, and follow the seven stages of tooth development.

免費的光合作用互動模擬實驗。在線動手探索光合作用——適合全班演示，也適合學生自主練習。