Begin by pressing the 'Demonstration' button to see how the counting to and fro (back and forth) method works. Then answer the questions above by selecting the correct response from the drop-down lists.
If you get a question correct on your first attempt you will be awaded 4 marks.
If you get a question correct on your second attempt you will be awaded 3 marks.
If you get a question correct on your third attempt you will be awaded 2 marks.
If you get a question correct on your fourth attempt you will be awaded 1 mark.
You need to score at least 17 out of 20 to be awarded a virtual trophy for this level.
[The list of ships in the answer drop-down boxes are in the same order as in the picture from left to right.]
Most people will be able to do level 1 by counting or making a table. Levels 2 and 3 get harder and you are encouraged to look for patterns instead of spending all your time counting. Level 4 is for older students and rocket scientists. You will need to work out a way of calculating the answer or be an advanced technoloy user. Level 4 will be out of reach for most people - you have been warned!
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"To and fro" and "back and forth" both describe moving between two places over and over again. "To and fro" is very old, going back to the 14th century, and uses an old word "fro," which means "away." "Back and forth" appeared more recently and often sounds clearer in modern speech. While both phrases can mean the same thing, "to and fro" can feel more old-fashioned or whimsical. "Back and forth" is common in everyday language because it is straightforward. However, both phrases describe the same idea of moving one way, then the other.
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❎Level 1 - A row of five houses, counting up to 21
Level 2 - A fleet of six ships, counting up to 40
Level 3 - Seven cute kittens wearing hats, counting up to 100
Level 4 - Eight aliens with strange names counting up to 99999
More puzzles all with a mathematical or logic theme.
