Parent guide · Grade 3 Math · Unit 8
Lesson 8.1 Time to the Minute and Elapsed Time
Written for the parent. Read the Say this lines aloud as they are, or in your own words. Answers for you are marked Listen for.
At a glance
- Time
- 5 sessions of 25–30 minutes
- Goal
- Tell time to the minute. Find elapsed time.
- You need
- A clock face
- Pencil and crayons
- A King James Bible
- Worksheet A · Worksheet B · the lesson page (it also has a short video (14:31))
Steps
Do this: Ask these out loud. Your child answers out loud; no paper needed.
- Ask: “6 × 7” Listen for: 42
- Ask: “8 × 5” Listen for: 40
- Ask: “4 × 6” Listen for: 24
- Ask: “4 × 5” Listen for: 20
- Ask: “10 × 6” Listen for: 60
Say this: “Count by fives to the last number, then count on by ones.”
Say this: “For elapsed time, jump hours first, then minutes.”
Say this: “Elapsed time: how much time passes between a start and an end.”
Show: Father starts planting at 10:25. He works for 3 hours and 15 minutes. What time does he finish?
Say this: “Add the hours first: 10:25 plus 3 hours is 1:25.”
Say this: “Add the minutes: 25 + 15 = 40.”
Say this: “He finishes at 1:40.”
Answer: 1:40
Show: The bread goes in the oven at 2:55 and bakes for 55 minutes. When does it come out?
Say this: “55 + 55 = 110 minutes, which is 1 hour 50 minutes.”
Say this: “The time is 3:50.”
Answer: 3:50. It comes out at 3:50.
Do this: Your child does these with you. Let them try first; help only after a real try.
Ask: What time does the clock show?
Listen for: 9:10
If stuck: The short hand is past the 9, so the hour is 9.
Ask: What time does the clock show?
Listen for: 8:44
If stuck: The short hand is past the 8, so the hour is 8.
Ask: What time does the clock show?
Listen for: 5:40
If stuck: The short hand is past the 5, so the hour is 5.
7 more practice items on the lesson page, and on Worksheet A and Worksheet B.
- Mixing hours and minutes when adding.
Weigh five kitchen items in grams. Order them lightest to heaviest. Estimate first, then weigh.
Say this: “Tell me what you learned today. Show me with your hands or the counters if you like.”
Listen for: Tell time to the minute.; Find elapsed time.
A just weight and balance are the LORD’s: all the weights of the bag are his work.
Honest scales please God. We measure carefully and fairly.
Fact drill. Recite: 60 minutes = 1 hour, 1,000 grams = 1 kilogram, 1,000 milliliters = 1 liter.
Spread over the week
5 sessions of 25–30 minutes. Stop while it is still going well.
- Session 1. Warm-up, then teach the new idea (steps 1 and 2).
- Session 2. Warm-up again, then show how with the examples.
- Session 3. Practice together, then play the game.
- Session 4. More practice on the worksheet, and the daily habit.
- Session 5. Quick check: narration and a few practice items. Move on when it is mostly right.