Back to If / Then Practice
If / Then Lesson 1

Condition Builder: Recipe Builder

Choose chemicals and a planet, then use if, else if, and else to create alien creatures.

20-25 min Ages 9-12 Real Lesson Else If

Check chemicals and a planet

if checks the first recipe. Each else if checks another. A recipe only matches when all three conditions are correct: chemical 1, chemical 2, and the planet.

Recipe Builder

Test the lab's recipe chain.

Starter recipes for inspiration

Glorp Juice + Wobble Dust on Mars → Bouncing Blob

Moon Slime + Nebula Nectar on Europa → Frost Baby Alien

Saturn Spark + Galaxy Gel on Saturn → Ringtail Floater

Venus Vapor + Comet Crumbs on Venus → Cloud Squid

Zibble Acid + Plutonian Pop anywhere → Explosion

Anything else → Mysterious Goo

Create your own recipe

Invent a creature, choose where it can be created, and add your recipe to the JavaScript chain.

Your custom recipe will appear in the code below.

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JavaScript Recipe

JavaScript is checking this recipe.

Read one line at a time. All checks joined by && must be true.

Explore the full else if recipe chain