Telling Time to the Half Hour

Early Childhood Depth 6 in the knowledge graph I know this Set as goal
time clocks measurement

Core Idea

When the minute hand points to 6 (halfway around the clock), it is 'half past' the hour (2:30, 3:30, etc.). This extends time-telling skills and introduces fractional thinking about hours.

Explainer

You already know how to tell time when the minute hand points straight up to the 12 — that's the exact hour (1:00, 2:00, 3:00). Think about what happens next: the minute hand slowly travels clockwise around the clock face. It takes a full 60 minutes to go all the way around and return to the 12. So when it has traveled halfway around that circle, exactly 30 minutes have passed — and it lands on the 6 at the very bottom of the clock.

This is why "half past" means 30 minutes. The word "half" refers to half of an hour, and an hour has 60 minutes, so half an hour is 30 minutes. When you see the minute hand pointing straight down at the 6, you always know it's 30 minutes past whatever hour the short (hour) hand is near. If the hour hand is between the 2 and the 3, the time is 2:30 — "half past two."

Here's a helpful picture: imagine the clock as a pizza cut in half. The top half goes from the 12 over to the 6. The bottom half goes from the 6 back to the 12. The minute hand sweeps through the top half during the first 30 minutes of each hour, and through the bottom half during the last 30 minutes. When it finishes the top half and reaches the 6, half an hour is done.

One thing to watch carefully: the hour hand (the short one) moves too, just much more slowly. At exactly 2:00, the hour hand points right at the 2. By the time 30 minutes have passed and it's 2:30, the hour hand has crept halfway between the 2 and the 3. So at half-past times, the hour hand is always between two numbers — not pointing directly at one. You read the hour from the number the hour hand just passed, not the one it's headed toward.

Practice Questions 5 questions

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