#2ndchat is a Twitter hashtag that can be used to chat, collaborate, and grow with other second grade educators from around the world. Every other week we will discuss a different topic. It's a great way to help grow your PLN (Professional/Personal Learning Network) and share ideas with others.
Hi #2ndchat
Let's chat about estimation in 15 minutes! Everyone is welcome! I'll be sharing some images that have never been seen. Join us!
#iteachmath#mtobs#edchat#math#maths
A1. Hi Lanny joining in a bit late. Estimation a way of showing an understanding of numbers and it can help a lot with operations and other math strands #2ndchat
A1cont- got so excited didn’t see other part. It’s important because when you estimate it gives immediate feedback to evaluate future problems. #2ndchat
Estimation- I think 17 blocks. I can count about 15 but the blocks are pretty big in the glass so there may not be that many that I cannot see. #2ndchat
I am teaching 1 on gamification (K-12 session). I'm in a teach-off (sort of like Top Chef but for teachers), and 2 sessions on creating formative task/assessments in Seesaw. :) #2ndchat
A2: 25 blocks? I counted the ones I could see which was about 20 and added a few extra. Because the blocks are long and fill up the glass I didn't think there would be too many extras. #2ndchat
Thank you all for estimating - and sharing your reasoning!
Remember, to pay attention to your thinking as you go. That will help us in some of the later questions in the chat.
#2ndchat
@SteveWyborney 's site has so many like these ! SO GOOD! #2ndchat We could do a esti-mystery week- sort of like global math twitter task challenge but on these! #2ndchat
In reply to
@LannySaretsky, @SteveWyborney, @AlliLamantia, @SteveWyborney
Rope 1 - What is the length of the rope in whole inches? Why do you think so?
The answer will be revealed (along with a new question) in 2 minutes.
#2ndchat
When I work with estimation in schools, I notice that often estimates are about 1/3 lower than the actual number. I'm not sure why, but that is something I see often. #2ndchat
Rope 2 - What is the length of the rope in whole inches? Why do you think so?
The answer will be revealed (along with a new question) in 2 minutes.
#2ndchat
#2ndchat
Rope 1
The metal on the clipboard is about 6" or so, so I visualized the rope to be about 6 (6") rulers....a little less, so I'm estimating 33"
Rope 3 - What is the length of the rope in whole inches? Why do you think so?
The answer will be revealed (along with a new question) in 2 minutes.
#2ndchat
That truck has turned into a favorite of mine. It appears in all 15 of the brand new estimation clipboards and some of the brand new esti-mysteries. #2ndchat
Rope 4 - What is the length of the rope in whole inches? Why do you think so?
The answer will be revealed (along with a new question) in 2 minutes.
#2ndchat
These are just awesome Steve. I really love what you do and enjoy sharing them with teachers I work with! Thank you for making these available to us! #2ndchat
Q2. I think you need to give students repeated opportunitiesto help them work on their reasoning skills. To help make their estimation skills improve #2ndchat
For many years, I thought of estimation as something like "Estimate the number of marbles in the jar," then after seeing the answer, I actually moved to a completely different context instead of spending a little more time within the one I had just built. #2ndchat
A2: They are able to build on what they used before to help them with new challenges within the same context. Staying in the same context helps them focus on the "new" part being highlighted. #2ndchat
#2ndchat This idea of being "wrong" got me thinknig tat there is something powerful in the "rapid fire" nature of this. There there is no time to dwell on mistakes, only to get up and take another shot.
I notice the staying within the same context appears to truly develop estimation skills in a way that helps students be far more accurate with estimation in other contexts. #2ndchat
A2:Students take what they know and use that to help them answer the next questions. It makes them more invested - it's not a 1 and done, right/wrong answer. #2ndchat
Thank you for mentioning that. In the classroom, I control the timing and pacing so I take it at the pace that works well. In twitter chats, I can't "hear" everyone so I space it out evenly (and fairly quickly). #2ndchat
In the classroom, I don't spend a lot of time on clue 1 because - just like what has happened here where nobody has a need to revise - I would move on to the next clue. #2ndchat
It really allows for students to revise...which goes to show that often we need to take a second look at our estimations. Again - not a 1 and done (which happens often). #2ndchat
We've been using an online 100s chart on @ToyTheaterGames that we have as a resource in Google classroom. I just say "everyone pull up the hundreds chart!" #2ndchat
In reply to
@SteveWyborney, @TechVolak2, @ToyTheaterGames
If students write down every estimate, the can see a nice pathway of their thinking.
If they also write their reasoning each time it becomes even more powerful. #2ndchat
A3: My teacher partner has an estimation jar or different things like cheetoh puffs, witch fingers, erasers random stuff and have them write all of their estimates on a chart. #2ndchat They count on Friday
Q3: I like giving students the opportunity to estimate a number that is too low and one that is too high before they think about a reasonable estimate. #2ndchat
A3 life around us - leaves on a small tree outside the school, sticky notes we put on the lockers when practicing math fluency, crayons in a small bucket, ,etc. #2ndchat
A3: we always use "notice and wonder" bc I am an @MFAnnie fan. It helps the kids get their bearings. We use this for Steve's stuff as well as 3 Act Math so its a protocol for us. #2ndchat
A3: My favorite strategy is having the students make their own esti-mysteries. First, it challenges them to count large collections accurately. Then, they create clues to challenge their friends, deeply thinking about the properties of numbers/number sense #2ndchat
Itll be interesting if you collected that data in comparison to reveal. What if they multiple their answer by 1.3 would it be close to the answer #2ndchat
I'll be posting 15 new esti-mysteries this weekend, 15 new estimation cilpboards, many new Splats, and several new cube conversations. All in a blog series I'm calling "20 Days of Number Sense and Rich Math Talk" I've written lessons for all levels. #2ndchat
My class is working on a box of these right now for our math coach. She brought us mini ones and they are creating clues for other 2nd graders. :) #2ndchat
THANK YOU for coming to #2ndchat tonight. It has been great spending time together discussing estimation. I hope you have a nice evening and a great day at school tomorrow. Thanks @missmac100 for the invite!
This is such a fun and excellent idea. Do you have your students post pics of them anywhere or just have the actual items displayed around the room? #2ndchat
