September · Week 1 · Day 2 · School day 2

Day 2: The Ball and the Map That Lies

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📏 Play with your child: Segment Sense

The day, step by step

1. 10–15 min Morning meeting and current events SL.9-10.1

   1. Question of the day: Is a map ever completely accurate? Why or why not? Students hold up a hand for yes, no or it depends, then give one reason.
   2. Current events: one student gives a two-sentence summary of a news story; the class asks one follow-up question.
   3. Review yesterday: segment, ray and the safety rule about eyes.

2. 15–20 min Vocabulary and word study L.9-10.4b

   1. Review spect (look). Add prefixes: retro (back), intro (inward), per (through).
   2. Define from parts: retrospective (looking back), introspective (looking inward), perspective (a way of seeing through something).
   3. Students write one sentence for each about Mathilde, for example: In retrospect, Mathilde should have told the truth.
   4. Quick check: which word fits a person who thinks hard about her own feelings? (introspective)

3. 30–40 min Literature and texts RL.9-10.3

   The Necklace by Guy de Maupassant (public domain; any translation)

   1. Read from the dress through the ball and the walk home, ending when they discover the necklace is gone.
   2. Mark three details that show Mathilde's pride: she will not go without a jewel, she borrows a diamond necklace from Madame Forestier, and she hurries away from the ball so no one sees her shabby wrap.
   3. Partner talk: what does her husband give up so she can have a dress? (The 400 francs he saved for a hunting gun.) What does that show about him?
   4. Predict: what will the Loisels do now? Write one sentence in the reading log.

4. 40–50 min Geometry HSG-CO.A.1

   1. State the Segment Addition Postulate: if B is between A and C, then AB + BC = AC.
   2. Worked example: AB = 7 and BC = 12, so AC = 7 + 12 = 19.
   3. Algebra example: AB = 2x + 1, BC = 3x - 4 and AC = 27. Then (2x + 1) + (3x - 4) = 27, so 5x - 3 = 27, 5x = 30 and x = 6. Check: AB = 13, BC = 14 and 13 + 14 = 27.
   4. Guided practice: B is between A and C, AC = 40, AB = x + 8 and BC = 3x. Solve. (4x + 8 = 40, so x = 8, AB = 16 and BC = 24.)
   5. Exit ticket: if PQ = 9 and PR = 25 with Q between P and R, find QR. (16)

5. 30–40 min Modern world history C3 D2.Geo.1.9-12

   1. Peel an orange (or draw a grid on a ball) and try to flatten the peel. It tears. Every flat map of a round Earth has to stretch or cut something.
   2. Compare a Mercator map with an equal-area map. On Mercator, Greenland looks about as big as Africa.
   3. Real sizes: Greenland is about 836,000 square miles; Africa is about 11.7 million square miles, roughly 14 times larger. Students divide 11,700,000 by 836,000 to check (about 14).
   4. Why use Mercator at all? It keeps directions true, which helped sailors steer a straight compass course. Students write one sentence: every map is chosen for a purpose.

6. 25–35 min Writing W.9-10.1a

   1. A topic is not a claim. Topic: pride. Claim: Mathilde's pride, not bad luck, causes her ruin.
   2. Test a claim: could a reasonable reader disagree? Can the text prove it? Try three weak claims and fix them together.
   3. Students write their own claim about Mathilde in one sentence and trade with a partner to test it.

7. 25–35 min Independent practice and projects

   1. Solve three segment addition problems from the board (answers posted for self-checking).
   2. Write retrospective, introspective and perspective each in a sentence about your summer.
   3. Find your state on both maps and describe how its shape and size change.
   4. Add the husband's 400 francs to your reading log and explain what it shows.

   Projects: set up the reading log and the writing portfolio; they travel with you all year.

   Device time (15 min): play Segment Sense on the Student games page.

   Today’s game: Segment Sense

8. 5–10 min Closing reflection SL.9-10.1

   1. What is one sign of Mathilde's pride at the ball?
   2. If AB = 5 and BC = 8, what is AC?
   3. Why does Greenland look so large on some maps?

Short day? Keep the reading, the segment addition examples and the orange peel demonstration.