Browsing All posts tagged under »fractions«

Spring! Division, place value

April 14, 2022


On the bus today b/c storms be a-comin’. I had an interesting lesson w/ the Tuesday Teens. Four were there, two were participating, so … yes, I got to be in my comfort zone addressing individuals. Class dynamics — I’m woefully out of practice. We’d introduced “halfiness” from the “Transitions” fractions section. My friend who […]


October 14, 2019


Social media had a thread about “frontloading” and “backfilling” lessons, and I was trying to wrap my brain around it… and got provided a great example of it. Students are supposed to figure out the area of the shaded part of the circle. Student comes in: coudln’t figure it out last night. “I know I […]

Images R Not Really Us

July 24, 2017


Yes, this is definitely in the “trick” category but it’s to keep from going down a path one has been down so many times before.  I got to watch this happen this morning…  reverting back to adding across, top and bottom… but it’s in the “so goofy it might stick” category. Part Two:    Okay, […]

Mebbe small vic’try subtracting fractions borrowing?

February 21, 2017


ALEKS  problem:   subtracting with common denominator with renaming.   Student:   no idea.   (Also non-native speaker so might have ideas w/0 language to express that I’d understand.)   ALEKS’ explanation involved renaming 4 2/9 as 3 + 1 + 2/9 = 3 + 9/9 + 2/9 and … since it’s all just stuck […]

“When I make my own…”

February 6, 2017


I was helping a guy with the Connect lesson where they’re learning about figuring out scaled models.   They like to throw in “real world stuff that twists things” — so they talk about where “3/4” scale actually means 3/4 inches stands for one foot.   It’s a pretty neat exploration. Still, lots of them […]

small victories

October 23, 2014


The “What do I do ???!!!” Well, what is it asking for? “pr… p… oh, perimeter…. ” and what does perimeter mean? “Oh, I just have to add them?” (Now, stumbling over 2 and 23/12 and wanting to know how to get the calculator to figure it out was the other battle… but…)

concepts, concepts

October 29, 2013


Dear Decimal Institute Tweeps: AJ approaches my desk… … “I ain’t had this when I was growing up.”     Questions:   what’s half of 4/9?  What’s half of 10/17/   What’s half of 1/5? I ask:   “What does 4/9 mean?” He answers: “Well, you have this pizza, and it’s sliced into nine pieces.” […]

Which lessons?

October 21, 2013


I’m thinking of my “pet peeve procedural” lessons — where the tug of war between going through the meaning of what we’re doing and having a way of getting it done quickly sends the concepts plopping into the mud.  THink about rounding.  I had a student in Overwhelmed by ALEKS status who a:  had no […]

unlearning helplessness

July 11, 2013


It’s Thursday-Friday. YOu *might* have thunk things would be quiet around here… but we did have to kick ’em out at closing time, and no, we didn’t have margaritas. There are ways to attend so that you can do it on your own, and there are ways to attend paying fierce attention to what moves […]

fractions, the f word

June 22, 2012

0   No surprise to me, it’s the folks who actually understand fractions in fifth grade who go on to understand math later.   Now, if only I could understand why my code is breaking 😉   Considering signing up for CSC 175, the Javascript class…