Time AM and PM - math grade 2 - lesson 55

1.TEACHER DO: Display the large analog and digital clocks where all students can see.

TEACHER SAY: Turn to your Shoulder Partner and tell them anything you know about these two items (point to the clocks). What are these? What do they do for us? Give me a Thumbs Up when you are ready.

STUDENTS DO: Talk to their Shoulder Partner about what they know about time and clocks. Give a Thumbs Up when ready. Selected students share their thinking.

TEACHER SAY: Both of these items are clocks. They are different kinds of clocks, but both tell us the time.

TEACHER DO: Point out the different parts of the digital clock as you explain.

TEACHER SAY: You may remember from last year that the digital clock shows the time of day using numbers. Th ere is a colon (:) in the middle of the clock face. Th e numbers on the left side of the colon tell us the hour. Th e numbers on the right side of the colon tell us the minutes.

TEACHER DO: Point out the different parts of the analog clock as you explain.

TEACHER SAY: The analog clock tells us what time it is using two hands. The short hand tells us the hour. We call that hand the hour hand. The longer hand tells us the minutes. We call that hand the minute hand. These hands move around the clock as time passes and point to different numbers. These numbers tell us the time. How many numbers are on the analog clock? Raise your hand if you know.

STUDENTS DO: Raise hand to volunteer. Selected student answers the question.

TEACHER SAY: Yes, there are 12 numbers on the analog clock. Stand up if you remember how many hours there are in a day.

STUDENTS DO: Stand if they remember.

TEACHER DO: Call on standing students to share their thinking. Confirm the correct answer.

TEACHER SAY: There are 24 hours in one day. How can the analog clock tell us the correct time when there are 24 hours in a day but only 12 hours on the clock? Share your thinking with your Shoulder Partner.

STUDENTS DO: Discuss their ideas with their Shoulder Partner.

TEACHER DO: Use Calling Sticks to select a few students to share their ideas.

STUDENTS DO: Selected students share their thoughts with the class.

TEACHER DO: Reinforce students’ correct answers. If no students know the answer, be sure to provide an explanation. Use the large analog clock to demonstrate.

TEACHER SAY: One day is broken up into two 12-hour parts. The parts have different names— a.m. and p.m. The a.m. half of the day is the morning time from 12 midnight to 12 noon (around lunchtime). The p.m. half of the day is the afternoon and evening time from 12 noon to 12 midnight. When we add the 12 hours in the a.m. to the 12 hours in the p.m., we get our 24-hour day. That is one of our doubles facts: 12 + 12 = 24.

2.TEACHER SAY: Let’s talk about things that we do in the a.m. and p.m. We are going to play a game called Pop Up/Squat Down. I am going to show a time on the analog clock. Then I will say an activity. If you would do that activity in the a.m., you will pop up. If you would do the activity in the p.m., I want you to squat down. Let’s try one.

TEACHER DO: Show 7:00 on the analog clock.

TEACHER SAY: My clock shows 7:00. Remember from last year that when the minute hand is on the 12, it is a new hour. The hour hand is on the 7 so I know the time is 7:00. But the analog clock does not tell us whether that is 7 a.m. or 7 p.m. My activity is eating breakfast. If you would eat breakfast at 7 a.m., pop up. If you would eat breakfast at 7 p.m., squat down.

STUDENTS DO: Play Pop Up/Squat Down to practice a.m. and p.m.

TEACHER SAY: You would eat breakfast at 7 a.m. in the morning, so you all should have popped up. Let’s try another one.

TEACHER DO: Continue the game with the following:

• Show 3:00 on the analog clock. Activity—play outside—squat down.
• Show 11:00 on the analog clock. Activity—eat lunch—stand up.
• Show 8:00 on the analog clock. Activity—go to bed—squat down.
• Show 8:00 on the analog clock. Activity—go to school—stand up.

STUDENTS DO: Play Pop Up/Squat Down to practice a.m. and p.m.

3.TEACHER SAY: Let’s continue practicing a.m. and p.m. activities. Take out your student PRIMARY 2 91 book and turn to page Lesson 55: Apply.

STUDENTS DO: Take out the student book and turn to page Lesson 55: Apply.

TEACHER SAY: On the page you will see pictures of some activities and a clock. You will talk with your Shoulder Partner to determine if the picture is showing an activity that would be done in the a.m. or the p.m. Th en circle a.m. or p.m. to show your answer.

STUDENTS DO: Work with their Shoulder Partner to discuss each activity and decide if it would be done in the a.m. or p.m. Circle their answers.

TEACHER DO: Allow students time to complete activity. If time allows, go over correct answers together.