Back to: MIZ Fridays 2024-2025
Video of the Day
KenKen
https://www.kenkenpuzzle.com/game
Puzzle #211203
Hints
- fill any single cell cages
- look for any cages where the target can only be made by a small number of combinations. e.g. for a 4✖️4,
3➖must be4 & 1.4✖️must be2, 2, and 1(and the2s can’t be touching) or1, 1, and 4(and the1s can’t be touching.)
Math Time
Order of Operations
Operators
- ➕ ➖ ✖️ ➗
- are binary; unary ones exist (e.g. negation)
Commutative Law
- beep beep: think commuting
- For ✖️ & ➕ can re-arrange operands; you’ll get the same answer
- Not for ➖ or ➗!
Identity
- something that is the same as another thing
- can be proved
- used in math to re-write equations so that they are easier to understand/solve/use
Identity Elements
- a number that when used with an operator, leaves the other number unchanged
- for ➕ & ➖ the identity element is 0 (e.g.
2 ➕ 0 = 2;3 ➖ 0 = 3.) - for ✖️ & ➗ the identity element is 1 (e.g.
3 ✖️ 1 = 3;9 ➗ 1 = 9.)
Video Presentation Research
- work on the video you’ll present & connected activity
- ~10 minutes video, and ~10 minutes of activity
Portfolio Update
- create a log entry for today
- update notes for your presentation video & activity
