Track quiz
Quick questions on each lesson. Use the table if you get stuck.
| Idea | The rule |
|---|---|
| Looks | The lines you write stay the same. The looks a search takes change with the card. |
| Halving | A middle look on a sorted row drops about half the cards. On a jumbled row, it can drop the wrong half. |
| Shapes | Every shape has a fixed job. A box does one step. A yes-or-no diamond asks one question, with two ways out. |
| Every case | Every case must reach an answer. A case no arrow catches has no answer. |
| Bugs | Predict first. Run it. The first difference points to the bug. |
A search sheet has 5 lines. It searches a row one by one. The card is at place 4. How many looks?
A row has 20 cards. A plain search from the first card ignores the order. The card is not in the row. How many looks?
Which count is the same for every card you search for?
A sorted row has 12 cards. You look at the middle once. At most how many cards stay in range?
A sorted row has 8 cards. What is the most looks halving needs?
Halving runs on a jumbled row. What can happen?
Which flowchart shape asks a yes or no question?
Which shape starts and ends a flowchart?
"Enter your age" is a step that reads a value in. Which shape does it use?
How many arrows leave a diamond?
A plan has 3 yes-or-no facts. How many cases need an answer?
A chart has no arrow for one case. What does that case have?
A chart gives the right answer on its first test. What should you do next?
You predict an answer, then run the chart. The two differ. Where do you look?
The rule says "more than 7 days". A chart asks "7 days or more?". Which book shows the bug?
Next: Programming with Blocks III: Bridge to Text. You will write blocks as plain words, then as exact text.