Sunnyvale

​

Saturday

Level 3

Mr. Rodney

Target 1​

Lesson Type:

Continuation

Measurment

:

Time

Write and tell time to the nearest five minutes using analog and digital clocks.

Supporting targets:

1:

Understand the breakdown of hours into minutes.

2:

Recognize that a time on the hour will have the minute hand on the 12 on an analog clock and 00 on the digital clock.

3:

Apply knowledge of skip counting by fives to read an analog clock.

4:

Understand and use 24-hour notation (military time).

5:

Link digital, analogy, a.m., p.m., and military time.

Grade:

3rd

Vocabulary:

Standard Time, 24-Hour/Military Time, AM/PM, Elapsed Time, Hours, Minutes

Activities:

• · Reviewed skills learned in last week's class, i.e., elapsed time within the hour.
• · Applied learned skills to calculating elapsed time between any two times during the day using addition, subtraction, or a timeline.
• · Compared standard time to 24-hour military time, recognizing similarities and main differences.
• · Learned that, in 24-hour military time, any time after 1200hrs is PM in standard time.
• · Practiced converting military time to standard time, and vice versa.

Home Exploration

Challenge Problem:

1. For Part 1, convert the Standard Times into 24-Hour Military Time.
2. For Part 2, convert the 24-Hour Military Time to Standard Time. Make sure you remember to label AM or PM!

Challenge Data:

Part 1: 1) 5:45am 2) 1:20pm 3) 8:05pm
Part 2: 1) 0830 2) 1415 3) 2340

Guiding Questions:

• What is the difference between military time and standard time?
• If you have a military time where the hour is greater than or equal to 12, is the the time am or pm in standard time?
• You can draw a 24-hour timeline to compare military time to standard time.

Challenge Answer:

Part 1: 1)0545 2) 1320 3)2005
Part 2: 1) 8:30am 2) 2:15pm 3) 11:40pm