Ahava~Love Assembly

Grade 2 Mathematics Week 11 | Teacher Guide

Grade 2 | MATHEMATICS

WEEK 11 • TEACHER GUIDE AND ANSWER KEY • DAYS 51–55

Read each lesson aloud with the child and model the worked example before practice. Do not show this key during practice. Accept oral, drawn or written answers where the child cannot yet write the whole answer. On Day 55, read aloud if needed but give no hints.

Week 11 Student Textbook | Week 11 Practice Workbook | Week 11 Teacher Guide | Week 10 Student Textbook | Week 12 Student Textbook | Grade 2 index

Day 51: The Hour Hand and the Minute Hand

Standard: Grade 2 Math Standard 23, 2.M.C.23

Practice figure: Clocks A, B and C, printed on the Week 11 Practice Workbook. Clock A shows 9:10. Clock B shows 4:25. Clock C shows 11:40.

Worked example: The hour hand is between the 7 and the 8. The minute hand points to the 4. What time is it? Worked answer: 7:20.

  1. 9:10.
  2. 4:25.
  3. 11:40.
  4. 45 minutes (count 5, 10, 15, 20, 25, 30, 35, 40, 45).
  5. The hour hand has not reached the 12 yet. It is between the 11 and the 12, so the hour is still 11. It becomes 12 o’clock only when the minute hand comes back to the 12. Accept any answer that says the hour hand has not passed the 12.

Teaching note: Use a real clock or a paper-plate clock. Have the child touch each number while counting by fives. Watch for children who read the hour hand as the closer number.

Day 52: Analog and Digital Clocks

Standard: Grade 2 Math Standard 23, 2.M.C.23

Practice figure: Clocks D and E (draw the hands), printed on the Week 11 Practice Workbook. Clock D: minute hand on the 7, hour hand a little past the 6. Clock E: minute hand on the 1, hour hand just past the 10.

Worked example: A digital clock shows 3:40. Where do the hands go on an analog clock? Worked answer: The minute hand points to the 8, and the hour hand is between the 3 and the 4, closer to the 4.

  1. The 7.
  2. The 1.
  3. 8:50.
  4. 4:55.
  5. The hour hand has not passed the 2 yet, so the hour is still 1. In 5 more minutes it will be 2:00. Accept any answer that says the hour hand has not yet passed the 2.

Teaching note: Check Clocks D and E: the minute hand must be longer than the hour hand. At 6:35 the hour hand should sit a little past halfway between the 6 and the 7.

Day 53: a.m. and p.m.

Standard: Grade 2 Math Standard 23, 2.M.C.23

Practice record: Kai’s Saturday, printed on the Week 11 Practice Workbook.

Worked example: Ana eats breakfast at 7:15. Is that a.m. or p.m.? Worked answer: 7:15 a.m.

  1. 10:30 a.m.
  2. 12:15 p.m. (lunch is just after noon).
  3. 8:05 a.m. and 8:50 p.m.
  4. 9:00 a.m.
  5. 6:00 happens twice each day, once in the morning and once in the evening. Without a.m. or p.m., the friend would not know which one to come. Accept any answer that says the time happens twice a day.

Teaching note: 12:15 p.m. is the hardest item: noon begins p.m. In the hands-on task, check that the five times are in order and that each a.m. or p.m. matches the activity.

Day 54: Quarter Past, Half Past and Quarter To

Standard: Grade 2 Math Standard 23, 2.M.C.23; Grade 2 Math Standard 23, 2.M.C.23a

Practice figure: Clocks F, G and H, printed on the Week 11 Practice Workbook. Clock F shows 2:30. Clock G shows 8:45. Clock H shows 11:15.

Worked example: Write quarter past 5 as a digital time. Worked answer: 5:15.

  1. Half past 2.
  2. Quarter to 9.
  3. Quarter past 11.
  4. 3:45.
  5. Quarter to 4 is 15 minutes before 4:00. The clock has not reached 4 yet, so the hour is still 3, and the minutes are 45. Accept any answer that says it is before 4 o’clock.

Teaching note: Fold a paper circle into quarters to show that each quarter of the clock is 15 minutes. Quarter to is the most confusing phrase; have the child count back 15 minutes from the next hour.

Day 55: Independent Check: Telling Time

Standard: Grade 2 Math Standard 23, 2.M.C.23; Grade 2 Math Standard 23, 2.M.C.23a

Practice figure: Clocks J and K, printed on the Week 11 Practice Workbook. Clock J shows 5:25. Clock K shows 12:50.

Worked example: The hour hand is between the 10 and the 11. The minute hand points to the 7. What time is it? Worked answer: 10:35.

  1. 5:25.
  2. 12:50.
  3. 7:30.
  4. 4:15 p.m.
  5. Quarter past 6 is 6:15. 6:45 is 15 minutes before 7, so it is quarter to 7. Accept quarter to 7 with a reason.

Teaching note: Independent check: read aloud if needed, but give no hints. Clock K is a good test of the 12 o’clock hour.

Week 11 Student Textbook | Week 11 Practice Workbook | Week 11 Teacher Guide | Week 10 Student Textbook | Week 12 Student Textbook | Grade 2 index