In this short guide you will be able to preview the segment. You’ll also get some great ideas for in-class activities after watching the video with your students.
Here are 2 creative and fun in-class
activities for before/after
watching the video…
Breaking the Code
The table, Code Breaker, gives a value to each letter in the alphabet: A=1, B=2 etc. Using the Code Breaker, your students will have to solve the following three challenges –
Spell your favorite color
For example, the color BLACK= 2,30,1,3,20
Find out who the famous person is…
5, ___, 50, 100, 200, ___, 2, 50*
*The missing numbers are an extra challenge.
(The answer: Einstein.)
Select a name of a state/city
and present it by math operations
For example, the state of Florida:
2×3; 60÷2; 25×2+10; 180÷2; 3×3; 36÷9; 1×1
To open this safe you must use 3 digits in the correct order. Can you find them based on the following clues?
Can you find the 3 correct digits to open this safe?
To solve this tricky challenge, we use the elimination strategy:
The 4th clue tells us that the numbers 3, 7 and 2 won’t be used. (0,1,4,5,6,8,9 are still optional)
5th clue – since 7 and 2 can’t be used, number 5 must be used in the first or second place.
1st clue: we eliminate the 2 and we know that 4 or 8 will be used: if it’s 8 it must be in third place, and if it’s 4 it must be in first place.
When checking the 2nd clue it’s clear that number 4 can’t be in first place, (because it contradicts the 1st clue)…so we eliminate number 4 and it is now clear that number 8 must be the third digit. (we also know that 9 or 6 will be used but not in their current places)
3rd clue – Since we eliminated number 4, we know that both 8 and 5 will be used. If 8 is in third place, 5 must be in first place.
So which digit will be in the middle? Back to the 2nd clue, we know that 9 or 6 will be in the middle. However, since 9 can’t be in the middle, we know that it must be number 6.
The correct digits:
5, 6, 8
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