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SOW GROW
PLAY
Look at and listen to each math question. Click/tap on the pot that has the right answer. Expand answers if necessary using the magnifying glass buttons.
Correct answers water the seedling which grows, blooms and the flower is cut for the vase. Continue until you have collected the given number of flowers.
...

Game: SOW GROW

Aim: To grow and gather sunflowers

Method:
Look at and listen to each math question. Click/tap on the pot that has the right answer. Expand answers if necessary using the magnifying glass buttons.
Correct answers water the seedling which grows, blooms and the flower is cut for the vase. Continue until you have collected the given number of flowers.

Doubling each time
      
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SOW GROW game to practice
'Doubling each time' for 3rd grade

Number patterns: double the number each time

This topic focuses on a number pattern where the next number is worked out by doubling the current one (multiply it by 2). This doubling pattern is easiest to understand by looking at examples. Let's start by looking at the simplest example:

1 , 2 , 4 , 8 , _ , _ ...

What comes next? To find out, let's first make sure this pattern is a doubling pattern by looking at the differences between each pair of numbers. You may notice that we are using multiply and divide because this pattern is a geometric sequence, not an arithmetic sequence.

  • 2 รท 1 = 2
  • 4 รท 2 = 2
  • 8 รท 4 = 2

You can see that in each step, we multiply the previous number by 2 to get the next number in the sequence. That is because doubling a number is the same as multiplying it by 2. Now, let's use this rule to find the next number:

8 x 2 = 16

The next number in the pattern is 16. The sequence now looks like this:

1 , 2 , 4 , 8 , 16 , _ ...

If we do the next number in the sequence, it will be 16 x 2 which is 32,

1 , 2 , 4 , 8 , 16 , 32 ...


To recap, always remember the following steps when identifying the next number in a pattern that doubles the size of the number each time:

  1. Confirm that the ratio between each pair of consecutive numbers is 2 by dividing them.
  2. Multiply the last number in the sequence by this ratio of 2.
  3. That gives you the next number in the sequence.

This topic asks you to work out the missing number in the pattern of numbers created by doubling the current number each time.


Related topics

With our Sow grow math game you will be practicing the topic "Doubling each time" from 3rd grade / Pattern / Number patterns. The math in this game consists of 16 questions that ask you to pick the next number in these number doubling patterns.

Match math questions to the right answer to grow flowers...relaxed game with nice outcome

Large thumbnail for math game Sow grow

Sow grow is a gentle game that concentrates on your ability to answer math questions. The game itself is very simple to play and does not require manual dexterity or fast reaction times. You are growing sunflowers in pots on a window sill. When you answer questions correctly you get to pick a sunflower to put in the vase. When the vase is full, you have completed the game.

Notes

  1. Sow grow is a one player game to learn or revise math.
  2. Sow grow is a timed game - play a few times, set a personal best time and try to get on the leaderboard!
  3. It is best to go through the sample questions in the topic lesson before you attempt this game.
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How to play Sow grow to practice
'Doubling each time' for 3rd grade

Free Math Games screenshot of Sow grow game for learning and practicing elementary math

  1. Select the Sow grow game from the "Games" selection page.
  2. On the settings page there are brief instructions on how to play.
  3. Click on PLAY to start the game.
  4. The game is timed - the clock starts when you enter the play screen.
  5. The first seeds are planted then the first math question is revealed above the pots.
  6. If you have robot speech enabled, the robot voice will speak the question.
  7. Click / tap on the speaker button at top right if you want to hear the audio repeated.
  8. Click / tap on the question box to expand the question and hear the audio repeated.
  9. Click / tap on the pot that correctly answers the question.
  10. If your answer is correct the seedling will grow into a flower which is then cut and put in the vase.
  11. If your answer is wrong, the audio will play again, and an arrow will indicate the correct answer. Click the close button at top right to continue.
  12. The number of questions you need to answer is in the count box at top right above the clock.
  13. There are occasional "flower bonuses" available which will take 5 seconds off your time.
  14. A leaderboard records the 10 fastest times for each topic. Click the gold star on the vase to see the leaderboard.
  15. If you get one of the 10 fastest times, you are offered the chance to enter your name into the leaderboard, or you can cancel if you are not interested.
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