John Hartmann
@jhartedu.bsky.social
20+ year teacher. Elementary. Former EdTech enthusiast. Now Math Interventionist. Interested in Instructional Coaching. From STL MO. Go Chiefs!
It's greater than 1 I saw.
October 29, 2025 at 11:10 PM
It's greater than 1 I saw.
Maximum post, sir!
October 3, 2025 at 2:25 AM
Maximum post, sir!
First thought was to break 15 into 10 and 5. But then I noticed both were great candidates for double/halve. 30x12 is easier but I repeat the d/h to get 60x6. Now I'm working with a known square 6x6 is 36 and shift place value since it's 6 tens. 360.
September 3, 2025 at 11:22 AM
First thought was to break 15 into 10 and 5. But then I noticed both were great candidates for double/halve. 30x12 is easier but I repeat the d/h to get 60x6. Now I'm working with a known square 6x6 is 36 and shift place value since it's 6 tens. 360.
Happy birthday sir. Hope it is great.
August 10, 2025 at 4:32 PM
Happy birthday sir. Hope it is great.
We use this a lot but never considered it with mixed numbers. Always learning. Thank you
July 5, 2025 at 3:13 PM
We use this a lot but never considered it with mixed numbers. Always learning. Thank you
Not totally free, but free-ish, Padlet I think has something called Sandbox. Similar to Jamboard. Can have three boards for free I believe.
June 24, 2025 at 2:03 AM
Not totally free, but free-ish, Padlet I think has something called Sandbox. Similar to Jamboard. Can have three boards for free I believe.
(20×8)-16
160-10-6
150-6
144
160-10-6
150-6
144
June 23, 2025 at 2:41 PM
(20×8)-16
160-10-6
150-6
144
160-10-6
150-6
144
It might just be the associative property talking, but I think we should pair up...
June 20, 2025 at 2:38 AM
It might just be the associative property talking, but I think we should pair up...
Weird... but I'm having a harder time than I probably should be reconciling this. I can see it but...
June 18, 2025 at 7:06 PM
Weird... but I'm having a harder time than I probably should be reconciling this. I can see it but...
Situational... if it cost me $ I'd round down. If it profited me, round to 1. If I was being offered 0.49999 of a brownie, up to 1 full piece. 0.49999 of a brussel sprout, down to 0 thanks. 😁
June 1, 2025 at 12:43 PM
Situational... if it cost me $ I'd round down. If it profited me, round to 1. If I was being offered 0.49999 of a brownie, up to 1 full piece. 0.49999 of a brussel sprout, down to 0 thanks. 😁