Rocket and Raven walk to the park. Rocket points at a red sign. "It only says stop," he says. "Why not a long sentence?"
Raven thinks. "What do you notice about the drivers? They need to read it fast."
Nova says, "The sign hides long words behind one simple symbol. That is called abstraction." Let's help them match symbols to their big ideas.
Look at a STOP sign. It is a red shape with the letters S-T-O-P. You don't read the whole sentence 'please stop your car carefully'. The sign is an ABSTRACTION; it hides the long sentence behind a simple symbol.
Match the symbol to its meaning. Draw a line.
| Symbol | Means… |
|---|---|
| ⛔ | ( ) playground here |
| ♻️ | ( ) recycle |
| 🚸 | ( ) do not enter |
| ⚠️ | ( ) be careful |
Abstraction means keeping what matters and hiding the rest.
A stick figure is an abstraction of a person. It has no eyelashes, but you still know it is a person.
| Statement | True or false? |
|---|---|
| A road sign is an abstraction. | ? |
| An abstraction shows every single detail. | ? |
| A function name hides the steps inside it. | ? |
| An emoji can stand for a feeling. | ? |