Ray's New Primary Arithmetic by Joseph Ray Ray's New Primary Arithmetic by Joseph Ray    

Lesson 127: Clock Markings

Directions

Explain the meanings of a clock's markings.

Complete the steps below until children perfectly master the tasks.

Steps

STEP 1

Teach children that the numbers 1-12 mark the hours, the minutes, and the seconds depending on which hand is pointing at the number. Point to each number on the clock image shown below and have children recite the following:

• Pointing to 1 means 1 o'clock for the hour hand, 5 minutes past the hour for the minute hand, and 5 seconds past the hour for the second hand.
• Pointing to 2 means 2 o'clock for the hour hand, 10 minutes past the hour for the minute hand, and 10 seconds past the hour for the second hand.
• Pointing to 3 means 3 o'clock for the hour hand, 15 minutes past the hour for the minute hand, and 15 seconds past the hour for the second hand.
• Pointing to 4 means 4 o'clock for the hour hand, 20 minutes past the hour for the minute hand, and 20 seconds past the hour for the second hand.
• Pointing to 5 means 5 o'clock for the hour hand, 25 minutes past the hour for the minute hand, and 25 seconds past the hour for the second hand.
• Pointing to 6 means 6 o'clock for the hour hand, 30 minutes past the hour for the minute hand, and 30 seconds past the hour for the second hand.
• Pointing to 7 means 7 o'clock for the hour hand, 35 minutes past the hour for the minute hand, and 35 seconds past the hour for the second hand.
• Pointing to 8 means 8 o'clock for the hour hand, 40 minutes past the hour for the minute hand, and 40 seconds past the hour for the second hand.
• Pointing to 9 means 9 o'clock for the hour hand, 45 minutes past the hour for the minute hand, and 45 seconds past the hour for the second hand.
• Pointing to 10 means 10 o'clock for the hour hand, 50 minutes past the hour for the minute hand, and 50 seconds past the hour for the second hand.
• Pointing to 11 means 11 o'clock for the hour hand, 55 minutes past the hour for the minute hand, and 55 seconds past the hour for the second hand.
• Pointing to 12 means 12 o'clock for the hour hand, 0 minutes past the hour for the minute hand, and 0 seconds past the hour for the second hand.

STEP 2

• Note to children that they may multiply the numbers 1-12 in black by 5 to determine the number of minutes and/or seconds in red.
• Have them calculate and recite the number of minutes and seconds.