What is a Universal Concept?
A universal concept is a BIG idea that shows up everywhere: in math, science, history, books, and even your own life. Thinkers use these big ideas like a lens (a special pair of glasses) to connect subjects that seem totally different.
Gifted educators like Dr. Sandra Kaplan at the University of Southern California made these big ideas famous in GATE classrooms. Along with the Depth and Complexity prompts, they help you think deeper and see connections other people miss.
🔍 Our first lens: CHANGE
Change pushes you to look past a single moment and ask: How did this get this way? What caused it to change? What will it become next?
Your mission
My badges
0 badges
The Time Machine
Pick something, then use the ◀ ▶ buttons, your ← → arrow keys, or drag the slider to watch it change.
Tip: press the ◀ ▶ buttons, tap the dots, or use the ← → arrow keys on your keyboard.
The 6 Rules of Change
Big ideas that are true about change almost everywhere. Thinkers call these generalizations.
Game: Which rule is it?
Read each example. Which Rule of Change does it show BEST?
Change Detective
Same place, 50 years apart. What changed?
Compare the two pictures. Click on the AFTER picture wherever you spot a change. There are 6 changes to find. For each one, decide: did nature cause it, or did people?
Found: 0 of 6
Change Across Subjects
The same big idea, four totally different subjects.
🔢 Math: change the input, change the output
In math, changing one number (a variable) can change the whole answer. Pick a rule, then change the input with the − + buttons or the slider.
The Magic Penny: change that snowballs
Would you rather have $1,000,000 today, or 1 penny that doubles every day for 30 days? Slide to watch the penny grow.
$0.01
🔬 Science: physical or chemical change?
A physical change changes how something looks, but it's still the same stuff (like ice melting into water). A chemical change makes a brand-new substance (like wood burning into ash and smoke).
📖 Literature: The Ugly Duckling
In stories, characters change too. That's called a character arc. In Hans Christian Andersen's fairy tale The Ugly Duckling (1843), follow the arc:
🏛️ History: how talking to faraway people changed
Put these inventions in order from oldest (top) to newest (bottom). Each change made the next one possible!
Fast or Slow?
Is change always slow and steady, or can it happen overnight?
Keyboard: press F for Overnight or S for Gradual. Get 12 points to earn the Speed Sorter badge!
Chain Reaction
Rule #5: Change creates MORE change. Knock over the dominoes!
Build a chain
Now make YOUR own chain reaction
Start with any change: in nature, in history, at school, or in your life. What does it cause? And what does THAT cause?
Change in Me
Use the Change Lens on yourself.
👶 Me at age 5
🧒 Me now
🧑 Me at age 20 (prediction!)
Big Questions
Core GATE questions about change.
There's no single "right" answer. Show your thinking and give examples from this unit. Write at least 2 sentences for each.
Turn it in with Google Docs
This puts everything you wrote in this unit into a Google Doc.