W hen we talk about Valve's two beloved first-person sci-fi shooter series, it's easy to think of Half-Life as ‘the serious one’ and Portal as ‘the funny one’. After all, ...

In this lesson, students will simulate the randomness of decay in radioactive atoms and visualize the half-life of a sample radioactive element. This lesson can be completed in two (2) 45-minute class ...

Surprise updates have landed for a range of classic Valve games, including Half-Life Deathmatch, Counter-Strike Source, and ...