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3 scores max per player; No foul language, show respect for other players, etc.

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DUCK SHOOT
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Game: DUCK SHOOT

Aim: Shoot as many ducks as you can

Method:
Use the catapult to shoot balls at the rows of ducks crossing the screen. Answer questions to win extra points.

Your final score is based on ducks hit or missed and the number of questions answered correctly.

Doubling each time

# The DUCK SHOOT game to practice'Doubling each time' for 4th grade

### Number patterns: double the number each time

This topic focuses on number patterns where each subsequent number is obtained by doubling the previous one. These patterns, known as geometric sequences with a common ratio of 2, are easiest to understand by looking at examples. Let's start by looking at one such number pattern:

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

What comes next? To find out, let's first look at the differences between each pair of consecutive numbers:

• 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

So, 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 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 next number in the pattern of numbers created by doubling the number each time.

##### Related topics

With our Duck shoot math game you will be practicing the topic "Doubling each time" from 4th grade / Pattern / Next number. The math in this game consists of 21 questions that ask you to pick the missing number in these number doubling patterns.

DUCK SHOOT is a fairground themed game of knocking ducks off the rail to score points

DUCK SHOOT is a fun game to learn math where you attempt to knock over all the fairground ducks in each level. In the first level there are only 6 ducks but by level 10 there are 24 fast moving "quackers quacking"...

After each level, win an additional 20 points by correctly answering a math question from your selected topic. There is no timer in this game: take as long as you like to answer the math questions correctly for a best score to get you on the DUCK SHOOT leaderboard.

#### Notes

• This is a fun game of knocking over as many tin ducks as you can
• Also suitable for tablets and mobiles (it's actually more fun than with a mouse)
• Answer math questions correctly for a higher score
• No timer element, you can relax and concentrate on getting your math right!

## How to play DUCK SHOOT to practice'Doubling each time' for 4th grade

DUCK SHOOT is a fairground themed game of knocking ducks off the rails to win points.

1. In each level of DUCK SHOOT, knock over as many ducks as you can.
2. Drag the orange ball back and away from the ducks then let go.
3. This will release a flying ball that will shoot towards the ducks (hopefully).
4. Any duck the flying ball hits will fall off the rail.
5. You get 5 points for each duck you hit.
6. You lose 5 points for each duck that escapes.
7. When all the ducks have been knocked off or have exited the screen, you get a math question from your selected topic.