Alien planet maths quest: time

Quick answer

You can use time to plan your journey, read clocks, and solve time puzzles on alien planets by understanding how hours, minutes, and seconds work, even when gravity and time systems are different.

Learning outcome

By the end of this page, you will be able to read and understand time on alien clocks, solve time puzzles, and use time to plan your journey across different planets.

• You can tell the time to the nearest minute on an alien clock.
• You can add and subtract time to plan your journey.
• You can solve time puzzles using your knowledge of hours and minutes.
• You can understand how time can be different on different planets.

Why this matters

Time is important everywhere – even on alien planets! When you travel to a new world, you need to know how to read time to avoid missing your spaceship, plan your adventure, or get to your destination on time. Time helps us understand how long things take, plan our day, and solve puzzles. Whether you're on Earth or on an alien planet, knowing time helps you be a great space explorer!

How it works

Time is measured in hours, minutes, and seconds. On Earth, there are 24 hours in a day, 60 minutes in an hour, and 60 seconds in a minute. On alien planets, time might be different, but we can still use the same ideas to understand it.

Let’s explore how time works on your space adventure:

1. Hours – These are the big jumps on the clock, like 1 o’clock, 2 o’clock, and so on.
2. Minutes – These are the small jumps, like 15 minutes, 30 minutes, and 45 minutes.
3. Seconds – These are the fastest jumps, like 10 seconds, 20 seconds, and 30 seconds.

On an alien planet, the clock might look different, but the way time works is the same. You just need to learn how to read it!

Examples you can see

Imagine you are on a space mission to Planet Zog. The clock on Planet Zog has 12 hours like Earth, but each hour is 60 minutes long. Here’s how it works:

Now, let’s say your spaceship needs to leave Planet Zog at 10 o’clock, but you are currently at 7 o’clock. How long do you have to get ready?

You can count the hours:

1. 7 o’clock to 8 o’clock = 1 hour
2. 8 o’clock to 9 o’clock = 1 hour
3. 9 o’clock to 10 o’clock = 1 hour

So, you have 3 hours to get ready!

Try it as a mini adventure

Imagine you are on a space mission to Planet Zog. You must complete a time challenge to find the secret code to your spaceship. Here’s your adventure:

1. Step 1: You see a clock that shows 3:15. What time is it in Earth time?
2. Step 2: You need to wait 2 hours and 30 minutes. What time will it be?
3. Step 3: You have a countdown of 1 hour and 45 minutes. How many minutes is that?
4. Step 4: You must travel for 4 hours and 15 minutes to reach the spaceship. What time will you arrive if you start at 6:30?

Let’s solve it together:

1. 3:15 is 3 hours and 15 minutes.
2. 2 hours and 30 minutes later = 5 hours and 45 minutes.
3. 1 hour and 45 minutes = 60 minutes + 45 minutes = 105 minutes.
4. Start at 6:30, add 4 hours and 15 minutes = 10:45.

Common mistakes

• Mistake: Thinking that 1 hour and 30 minutes is the same as 1 hour and 30 seconds.
• Why it happens: Mixing up minutes and seconds.
• Fix: Remember that minutes are longer than seconds. There are 60 seconds in a minute, so 1 minute = 60 seconds.

• Mistake: Adding time like 1 hour 45 minutes + 2 hours 30 minutes = 3 hours 75 minutes.
• Why it happens: Forgetting to convert 75 minutes into 1 hour and 15 minutes.
• Fix: 75 minutes = 1 hour and 15 minutes. So, 1 hour 45 minutes + 2 hours 30 minutes = 3 hours 75 minutes = 4 hours 15 minutes.

• Mistake: Reading a clock as 12:00 when it is actually 12:00 midnight.
• Why it happens: Not knowing the difference between AM and PM.
• Fix: Remember that 12:00 midnight is the start of the day, and 12:00 noon is the middle of the day.

Parent and carer guide

As a parent or carer, you can help your child understand time by:

1. Using real clocks: Let your child practice reading time on a real clock or watch. You can even make a clock with paper and markers to help them see how the hands move.
2. Playing time games: Try games like “What time is it?” where you say a time and your child shows it on a clock or says it aloud.
3. Counting time together: When you are out, count how long it takes to walk to the shop, or how long a movie lasts. This helps your child understand how time works in real life.
4. Using time words: Use words like “before,” “after,” “in the morning,” and “in the evening” to help your child understand time concepts.
5. Practicing with real-life examples: Ask your child to tell you what time it is when you start dinner, or how long it takes to get ready for school.

Remember, time can be tricky, but with practice, your child will get better at it. Don’t worry if they make mistakes – they are learning!

Practice questions

1. What time is it if the hour hand is on 3 and the minute hand is on 12?
2. If it is 2:45 and you wait 1 hour and 20 minutes, what time is it?
3. How many minutes are in 2 hours and 15 minutes?
4. What time is it if it is 1 hour 30 minutes after 10:15?
5. If a spaceship leaves at 9:30 and the journey takes 2 hours and 45 minutes, what time will it arrive?

Answers:

1. 3:00
2. 4:05
3. 135 minutes
4. 11:45
5. 12:15

FAQ

What is time?

Time is a way to measure how long things take. It helps us know when to do things, like when to wake up, eat lunch, or watch a movie.

How do I read time on a clock?

A clock has two hands: the hour hand (shorter) and the minute hand (longer). The hour hand shows the hour, and the minute hand shows the minutes past the hour.

How do I add time?

To add time, add the hours and minutes separately. If the minutes add up to more than 60, convert the extra minutes into hours.

How is time different on other planets?

On other planets, a day might be longer or shorter than Earth’s day. For example, a day on Mars is about 24 hours and 37 minutes long, so time can be different!

Why is it important to know time?

Knowing time helps us plan our day, be on time for school, and understand how long things take. It also helps us be good space explorers and solve puzzles on alien planets!