https://padlet.com/cassieurban6/m1mathlab Da'Jhon Jett, Makala Holman, Maria Impastato, Cassie Urban en-us 2020-09-06 14:34:48 UTC 2026-03-18 22:08:12 UTC hello@padlet.com https://padlet.net/icons/png/1f522.png cassieurban6 https://padlet.com/cassieurban6/m1mathlab/wish/737363294 Link here
Addition and subtraction within 50]]> 2020-09-11 00:48:21 UTC https://padlet.com/cassieurban6/m1mathlab/wish/737363294 cassieurban6 https://padlet.com/cassieurban6/m1mathlab/wish/741120934 The teacher will play video for students while they sit and watch, quietly taking mental notes about what is happening.

Teacher: How many cookies do you think the cookie monster ate? Write down an estimate that is on the higher side of how many he ate, then on the lower side. Do you think he saved any for later? Why/why not?

Possible student response #1: "I wrote down that he ate 2 and saved 15 for later. I listened to the sound and it didn't sound like he ate too many, but there were a lot missing when he put it back on the table."
Possible student response #2: "I think for a lower estimate I will say the cookie monster ate 13 cookies. I think this because I think that is the serving size on the bag. For a higher estimate, I think he ate 25 cookies. He may have saved some for later, but there isn't a way for me to know for sure."

Teacher: Those were some really great observations. I really loved how you paid attention to the sounds and movement of the cookie monster to determine your answers. I agree with Student #2 that it's very hard to tell if the cookie monster saved some for later! Let's watch the second video now!]]> 2020-09-12 17:41:10 UTC https://padlet.com/cassieurban6/m1mathlab/wish/741120934 cassieurban6 https://padlet.com/cassieurban6/m1mathlab/wish/741130583 The teacher will pull up the "modification" photo of all the oreos in the package on the Smartboard.

Teacher: I want you to give me an estimate to how many oreos came in the package? How did you figure out your answer?

Possible student response #1: "Well I see 3 rows. It looks like there are about 20 in each row. So my estimation is 60 cookies."
Possible student response #2: "I think there might be around 30 cookies in there because I see three rows and maybe 10 cookies per row."

Teacher: Those were some really great estimates! I enjoyed listening to your evidence behind your thoughts. We're now going to look at a photo of the cookies that were left from the cookie monster's meal. How many cookies do you think he ate in each row after seeing each photo? I want you to discuss with your tablemates.

Possible group response: "We think in the top row, the cookie monster ate about 6 cookies because we counted how many oreos were on the right side and it was 9, and noticed the space left was smaller, so it had to be a number less than 9. In the middle row, we think the cookie monster ate 2 less than the top row. We saw that there were two less cookies in the row, so we guessed that he ate 4 cookies. In the bottom row, we think the cookie monster ate two MORE than the first row. So 8 cookies. Good thing we counted the cookies, that really helped us!"

Teacher: WOW!! What an amazing response from your group. I can tell you all worked together to figure out all of that. And I absolutely LOVE that you used your math observation skills to notice that some cookies were added and subtracted from each row. Really nice job! Give me a thumbs up if you agree with this group's thinking!"]]> 2020-09-12 17:55:17 UTC https://padlet.com/cassieurban6/m1mathlab/wish/741130583 cassieurban6 https://padlet.com/cassieurban6/m1mathlab/wish/741184107 First photo to show]]> 2020-09-12 19:07:24 UTC https://padlet.com/cassieurban6/m1mathlab/wish/741184107 cassieurban6 https://padlet.com/cassieurban6/m1mathlab/wish/741184514 Second photo to show]]> 2020-09-12 19:08:10 UTC https://padlet.com/cassieurban6/m1mathlab/wish/741184514 cassieurban6 https://padlet.com/cassieurban6/m1mathlab/wish/741194093 The teacher will pull up the photo of the exact number of cookies eaten by the cookie monster.

Teacher: OK, now that we can see exactly how many cookies the cookie monster ate!! Was my group who shared their estimates correct? 

Possible student response: "Well they didn't get the numbers right!"

Teacher: Yes, you are right about that. But I am noticing something very similar to what that group mentioned they did to get their answers. What did they do?

Possible student response: "Oh!! They counted the first row of oreos. Then they were able to look and see how many were added or taken away from the other rows."

Teacher: EXACTLY! They used the same strategy. So knowing what we know now about how many cookies were eaten, who can tell me how many cookies in TOTAL there must be?

Possible student response: "Well we know that there were 22 cookies that the cookie monster ate. But I don't know how to figure out how many there were in total"

Teacher: Great job with that part - you are right! Can someone else help him/her out? We know that 22 cookies were eaten, so we need to add up the rest of the cookies in the bag to figure out how many there were in total.

Possible student response: "I counted 26 oreos in the bag. So 22+26 equals 48."

Teacher: GREAT job! Who agrees? Disagrees? And if we think back to our predictions on how many cookies the cookie monster ate, we were very close! Nice job boys and girls. You are such smart mathematicians!!

The teacher will go back and see who's estimate was the closest and give a round of applause to everyone who did a great job!]]> 2020-09-12 19:24:25 UTC https://padlet.com/cassieurban6/m1mathlab/wish/741194093 cassieurban6 https://padlet.com/cassieurban6/m1mathlab/wish/741194844 2020-09-12 19:25:40 UTC https://padlet.com/cassieurban6/m1mathlab/wish/741194844 holmanmakala https://padlet.com/cassieurban6/m1mathlab/wish/741280827 Some of the topics that this article addresses is the role of ongoing assessment, the value of observations, and self-reflection on problem solving which all supports the decision making in this math lab. ]]> 2020-09-12 21:50:49 UTC https://padlet.com/cassieurban6/m1mathlab/wish/741280827 holmanmakala https://padlet.com/cassieurban6/m1mathlab/wish/741281176 As noted in our selected article, "Teachers should offer opportunities to reflect on their problem solving through journal writing, allowing them to express their success and frustrations as they develop as problem solvers" (pg. 18). 

Students will be asked to answer three of the following prompts: ]]> 2020-09-12 21:51:32 UTC https://padlet.com/cassieurban6/m1mathlab/wish/741281176 dajhon_jett https://padlet.com/cassieurban6/m1mathlab/wish/742108091 In order to find the accurate amount of cookies eaten by Cookie Monster, the students started with a guess. This guess serves as a reasonable estimate of their initial understanding of the problem at hand. The next phase of the problem involves the students receiving an accurate picture of the cookies eaten withe the numbers of cookies eaten being listed to the left. As the students are able to see the number of cookies left in the row, they can now use the number of cookies left and add that to the number of cookies eaten in each row and then add it all together for a grand total. This last step then allows them to revise their total and assess their thinking. A discussion can then be held on their initial thinking and what changed to then allow them to arrive at their final thoughts.]]> 2020-09-13 19:19:45 UTC https://padlet.com/cassieurban6/m1mathlab/wish/742108091 dajhon_jett https://padlet.com/cassieurban6/m1mathlab/wish/742112724 2020-09-13 19:25:35 UTC https://padlet.com/cassieurban6/m1mathlab/wish/742112724 mariaimpastato https://padlet.com/cassieurban6/m1mathlab/wish/742198637 This lesson focuses on estimating the amount of cookies eaten by the cookie monster. Students are given the visual of the video and pictures of the cookies in order to begin the lesson. Different math tools can be used in order to help students engage in the concept of estimation and the idea of "Guess, Check and Revise". ]]> 2020-09-13 21:11:00 UTC https://padlet.com/cassieurban6/m1mathlab/wish/742198637 mariaimpastato https://padlet.com/cassieurban6/m1mathlab/wish/742211592 Students can use color tiles in order to work on the subject of estimating. Working with a partner, students can be given a pile of color tiled and then have some taken away by their partner. This could allow students to guess and then check their example like a concrete example of the activity seen in the cookie monster video.]]> 2020-09-13 21:26:51 UTC https://padlet.com/cassieurban6/m1mathlab/wish/742211592 mariaimpastato https://padlet.com/cassieurban6/m1mathlab/wish/742213901 Just like color tiles, Students can be given an amount of erasers and then have some taken away by their partner. Using cheap erasers is an easy math manipulative that you can also allow you to personalize it to the lesson!]]> 2020-09-13 21:29:35 UTC https://padlet.com/cassieurban6/m1mathlab/wish/742213901 mariaimpastato https://padlet.com/cassieurban6/m1mathlab/wish/742218001 Online math games can allow for students to work on this concept of estimation. This website allow for different addition, subtraction, multiplication, division, and just general counting estimation games. Students are asked to estimate and then given points on how close their estimate was to the correct answer.]]> 2020-09-13 21:34:39 UTC https://padlet.com/cassieurban6/m1mathlab/wish/742218001 mariaimpastato https://padlet.com/cassieurban6/m1mathlab/wish/742228036 Another online resource that can be used in the classroom or in a virtual classroom is Google Jamboard. See this example of an interactive virtual activity for estimation.]]> 2020-09-13 21:45:59 UTC https://padlet.com/cassieurban6/m1mathlab/wish/742228036