Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 147. The numbers in the middle row multiply to 102. The numbers in the bottom row multiply to 220. The numbers in the left column multiply to 168. The numbers in the middle column multiply to 187. The numbers in the right column multiply to 105.

Start your day with this #yohaku. Fill in cells with 9 different whole numbers to get products shown in each row/column. More free puzzles and books/ebooks for all ages can be found at yohaku.ca

Use 9 different factors of 440 in a 3 by 3 grid. The numbers in the top row add to 265. The numbers in the middle row add to 36. The numbers in the bottom row add to 21. The numbers in the left column add to 17. The numbers in the middle column add to 250. The numbers in the right column add to 55.

Start your week with this #yohaku. Fill in cells with 9 different factors of 440 to get totals shown in each row/column. #mathsky #iTeachMath

Use 16 different factors of 468 in a 4 by 4 grid. The numbers in the top row add to 95. The numbers in the second row add to 205. The numbers in the third row add to 326. The numbers in the bottom row add to 24. The numbers in the left column add to 183. The numbers in the second column add to 45. The numbers in the third column add to 89. The numbers in the right column add to 333. The central four cells contain square numbers.

Here's a #yohaku to take you into the weekend. Fill in cells with 16 different factors of 468 to get totals shown in each row/column AND shaded cells contain square numbers. #mathsky #iTeachMath

Use 9 different integers in a 3 by 3 grid. The numbers in the top row multiply to -225. The numbers in the middle row multiply to -8. The numbers in the bottom row multiply to 350. The numbers in the left column multiply to -120. The numbers in the middle column multiply to -42. The numbers in the right column multiply to 125. The sum of the integers in the 2 by 2 square at the top left of the grid is -10.

Try this shady #yohaku. Fill in cells with 9 different integers to get products shown in each row/column AND sum of 4 shaded cells is -10. #mathsky #iTeachMath

Nicely done!

Use 9 different factors of 728 in a 3 by 3 grid. The numbers in the top row add to 110. The numbers in the middle row add to 37. The numbers in the bottom row add to 391. The numbers in the left column add to 74. The numbers in the middle column add to 70. The numbers in the right column add to 394.

Start your day with this #yohaku. Fill in cells with 9 different factors of 728 to get totals shown in each row/column. #mathsky #iTeachMath

Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 104. The numbers in the middle row multiply to 198. The numbers in the bottom row multiply to 85. The numbers in the left column multiply to 78. The numbers in the middle column multiply to 220. The numbers in the right column multiply to 102.

"Start your day with this #yohaku. Fill in cells with 9 different whole numbers to get products shown in each row/column. More free puzzles and books/ebooks for all ages can be found at yohaku.ca

Use 9 different factors of 234 in a 3 by 3 grid. The numbers in the top row add to 46. The numbers in the middle row add to 30. The numbers in the bottom row add to 132. The numbers in the left column add to 136. The numbers in the middle column add to 22. The numbers in the right column add to 50.

Start your week with this #yohaku. Fill in cells with 9 different factors of 234 to get totals shown in each row/column. #mathsky #iTeachMath

Use 16 different factors of 336 in a 4 by 4 grid. The numbers in the top row add to 14. The numbers in the second row add to 153. The numbers in the third row add to 135. The numbers in the bottom row add to 58. The numbers in the left column add to 99. The numbers in the second column add to 37. The numbers in the third column add to 70. The numbers in the right column add to 154. The central four cells contain triangle numbers.

Here's a #yohaku to take you into the weekend. Fill in cells with 16 different factors of 336 to get totals shown in each row/column AND shaded cells contain triangle numbers. #mathsky #iTeachMath

Use 9 different integers in a 3 by 3 grid. The numbers in the top row multiply to -102. The numbers in the middle row multiply to -180. The numbers in the bottom row multiply to 22. The numbers in the left column multiply to 170. The numbers in the middle column multiply to 27. The numbers in the right column multiply to 88. The sum of the integers in the 2 by 2 square at the top left of the grid is 0.

Try this shady #yohaku. Fill in cells with 9 different integers to get products shown in each row/column AND sum of 4 shaded cells is 0. #mathsky #iTeachMath

Use 9 different factors of 168 in a 3 by 3 grid. The numbers in the top row add to 27. The numbers in the middle row add to 81. The numbers in the bottom row add to 37. The numbers in the left column add to 9. The numbers in the middle column add to 105. The numbers in the right column add to 31.

Start your day with this #yohaku. Fill in cells with 9 different factors of 168 to get totals shown in each row/column. #mathsky #iTeachMath

Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 27. The numbers in the middle row multiply to 84. The numbers in the bottom row multiply to 352. The numbers in the left column multiply to 168. The numbers in the middle column multiply to 594. The numbers in the right column multiply to 8.

"Start your day with this #yohaku. Fill in cells with 9 different whole numbers to get products shown in each row/column. More free puzzles and books/ebooks for all ages can be found at yohaku.ca

A jar of nutella floats inside the Integrity Space Capsule.

Loved seeing the Nutella jar floating by on Artemis 2 just now!

Use 9 different factors of 84 in a 3 by 3 grid. The numbers in the top row add to 21. The numbers in the middle row add to 60. The numbers in the bottom row add to 10. The numbers in the left column add to 12. The numbers in the middle column add to 57. The numbers in the right column add to 22.

Start your week with this #yohaku. Fill in cells with 9 different factors of 84 to get totals shown in each row/column. #mathsky #iTeachMath

Use 16 different factors of 630 in a 4 by 4 grid. The numbers in the top row add to 39. The numbers in the second row add to 103. The numbers in the third row add to 165. The numbers in the bottom row add to 12. The numbers in the left column add to 71. The numbers in the second column add to 35. The numbers in the third column add to 90. The numbers in the right column add to 123. The central four cells contain triangle numbers.

Here's a #yohaku to take you into the weekend. Fill in cells with 16 different factors of 630 to get totals shown in each row/column AND shaded cells contain triangle numbers. #mathsky #iTeachMath

Use 9 different integers in a 3 by 3 grid. The numbers in the top row multiply to -312. The numbers in the middle row multiply to 63. The numbers in the bottom row multiply to -44. The numbers in the left column multiply to 396. The numbers in the middle column multiply to 91. The numbers in the right column multiply to 24. The sum of the integers in the 2 by 2 square at the top left of the grid is -5.

Try this shady #yohaku. Fill in cells with 9 different integers to get products shown in each row/column AND sum of 4 shaded cells is -5. #mathsky #iTeachMath

Use 9 different factors of 510 in a 3 by 3 grid. The numbers in the top row add to 42. The numbers in the middle row add to 16. The numbers in the bottom row add to 188. The numbers in the left column add to 186. The numbers in the middle column add to 50. The numbers in the right column add to 10.

Start your day with this #yohaku. Fill in cells with 9 different factors of 510 to get totals shown in each row/column. #mathsky #iTeachMath

Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 78. The numbers in the middle row multiply to 255. The numbers in the bottom row multiply to 56. The numbers in the left column multiply to 126. The numbers in the middle column multiply to 260. The numbers in the right column multiply to 34.

Start your day with this #yohaku. Fill in cells with 9 different whole numbers to get products shown in each row/column. More free puzzles and books/ebooks for all ages can be found at yohaku.ca

Nothing in depth but I used the idea above as a warm up today and I was glad to see the students make a connection to the Kaktovik numerals that we did a task on last week. For the rest of this week I will be using ideas like these as a starting activity:

Use 9 different factors of 280 in a 3 by 3 grid. The numbers in the top row add to 88. The numbers in the middle row add to 39. The numbers in the bottom row add to 7. The numbers in the left column add to 28. The numbers in the middle column add to 30. The numbers in the right column add to 76.

Start your week with this #yohaku. Fill in cells with 9 different factors of 280 to get totals shown in each row/column. #mathsky #iTeachMath

I saw Project Hail Mary last week and loved it so much that I had to re-read the book. I had remembered about the Eridian base-6 number system but hadn't noticed how the last chapter was numbered.
I might give this to my students on Monday as an opening task!

Use 16 different factors of 630 in a 4 by 4 grid. The numbers in the top row add to 33. The numbers in the second row add to 46. The numbers in the third row add to 85. The numbers in the bottom row add to 544. The numbers in the left column add to 381. The numbers in the second column add to 37. The numbers in the third column add to 11. The numbers in the right column add to 279. The central four cells contain triangle numbers.

Here's a #yohaku to take you into the weekend. Fill in cells with 16 different factors of 630 to get totals shown in each row/column AND shaded cells contain triangle numbers. #mathsky #iTeachMath

Use 9 different integers in a 3 by 3 grid. The numbers in the top row multiply to -39. The numbers in the middle row multiply to 385. The numbers in the bottom row multiply to 170. The numbers in the left column multiply to 182. The numbers in the middle column multiply to 75. The numbers in the right column multiply to -187. The sum of the integers in the 2 by 2 square at the top left of the grid is -2.

Try this shady #yohaku. Fill in cells with 9 different integers to get products shown in each row/column AND sum of 4 shaded cells is -2. #mathsky #iTeachMath

Use 9 different factors of 550 in a 3 by 3 grid. The numbers in the top row add to 38. The numbers in the middle row add to 137. The numbers in the bottom row add to 61. The numbers in the left column add to 14. The numbers in the middle column add to 80. The numbers in the right column add to 142.

Start your day with this #yohaku. Fill in cells with 9 different factors of 550 to get totals shown in each row/column. #mathsky #iTeachMath

Use 9 different whole numbers in a 3 by 3 grid. The numbers in the top row multiply to 91. The numbers in the middle row multiply to 40. The numbers in the bottom row multiply to 162. The numbers in the left column multiply to 252. The numbers in the middle column multiply to 12. The numbers in the right column multiply to 195.

Start your day with this #yohaku. Fill in cells with 9 different whole numbers to get products shown in each row/column. More free puzzles and books/ebooks for all ages can be found at yohaku.ca

Use 9 different factors of 90 in a 3 by 3 grid. The numbers in the top row add to 13. The numbers in the middle row add to 31. The numbers in the bottom row add to 54. The numbers in the left column add to 50. The numbers in the middle column add to 31. The numbers in the right column add to 17.

Start your week with this #yohaku. Fill in cells with 9 different factors of 90 to get totals shown in each row/column. #mathsky #iTeachMath

A great blue heron stood hunched on snowy ground next to a pond.

Saw my first heron of the year on my daily run. It was actually sleeping when I first spotted it and only stirred when I got closer.

🚨SPOILER ALERT🚨

This took me a long time and centred on knowing that with the 2 in the obvious position, then the 53 had to go in one of the remaing squares in the top 3 by 3 cells. After that it was a lot of trial and improvement!

7 41 5 31
53 2 47 3
13 43 37 17
19 23 11 29

Yeah, that is a tough puzzle…

Use 16 different factors of 240 in a 4 by 4 grid. The numbers in the top row add to 11. The numbers in the second row add to 172. The numbers in the third row add to 41. The numbers in the bottom row add to 112. The numbers in the left column add to 67. The numbers in the second column add to 52. The numbers in the third column add to 191. The numbers in the right column add to 26. The central four cells contain triangle numbers.

Here's a #yohaku to take you into the weekend. Fill in cells with 16 different factors of 240 to get totals shown in each row/column AND shaded cells contain triangle numbers. #mathsky #iTeachMath