Roller Coasters and Math

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One goal this year is to have my classes complete more interdiciplinary projects. These projects move beyond district-adopted texts and often involve multiple subjects and student groups.  I find value in having these projects as students often need to work in teams and apply their mathematical thinking in different situations.

Back in September I came across the tag #paperrollercoaster.  After completing a quick search I came across multiple pages where teachers had students create paper roller coasters and answer questions.  The questions were often related to math/Science objectives.  I thought this had potential so I finalized a decision and ordered a set from here.  My thinking was that if one worked out well I might order more.

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The materials arrive around a week after I placed the order.  I decided to use the project with a third grade class.  After a brief explanation, students were placed in three groups.

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One group drew out and created an outline for the base on a piece of cardboard.  The group was asked to create six square bases where students would be placing support columns. The second group scored, cut out and attached the base columns together to be placed on the outline of the first group.  The third group was in charge of creating the support beams. Students scored, cut out and opened up both ends of the beams so they could be added to the columns.

All groups had approximately 20 minute to work in their group.  They were supplied with tape, scissors and directions.  Afterwards, the class met in the front of the room and we started to build the base for the roller coaster.  During that time the class started to discuss some of the math vocabulary we’ll be using as the building continues. Most of the terms will be coming from the geometry and measurement math strands.  The terms area, surface area, volume, length, formulas, speed and height were all discussed before the students left for their next class.  I appreciate the multiple math entry points available through the use of this project.  As the project progresses I’m planning to add activities/sheets that we use.  In the meantime, feel free to check out a few lessons here.

 

Multi-digit Multiplication Strategies

 

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This past week my third grade class investigated different ways to multiply numbers.  Before diving into this concept I asked the students their thoughts on multiplication.  A few students explained to the class their view on the topic of multiplication.

  • repeated addition
  • double or triple “hopping”
  • using arrays
  • “timesing”
  • Increase the number by “a lot”

Most students were able to showcase examples of the above.  Even though their vocabulary wasn’t exactly spot-on, students were able to come to the whiteboard and show their thinking.

I received different responses from the students when asking them about multi-digit multiplication.  Actually, it was more of a lack of response.  I feel like some of this is due to exposure.  A few students raised their hands and asked to show their process to multiply multi-digit numbers. These students showcased their ability to use the traditional algorithm. The class reviewed this method with a few examples.  Although students were finding the correct product they had trouble explaining the process. Students weren’t able to communicate why it worked or another method to find a solution.

On Tuesday my class started to explore the partial-products algorithm.  Students were able to decompose individual products and find the sum.  This made sense to students.  Students were able to connect an area model with the partial-products method.  They started to write number models right next to each partial-product.

Later in the week students were introduced to the lattice method.  This method seemed “fun” for the students, but didn’t make as much sense as the partial-products method.  Students were able draw the boxes and create diagonals to find the product.  Some students had trouble with laying the boxes out before multiplying.

During the last day of the week students were asked to explain in written form how to multiply multi-digit numbers.  Even though all of the students could use the traditional, partial-products and lattice methods, they were stuck for a bit.  Soon, most students started to lean towards using the partial-products method to explain how and why this method works.  I asked one student in particular why it made sense and she said “I can see it visually and in number form.”  Although most students were able to use the other methods effectively they didn’t seem confident enough to explain why the strategies worked.

Students will be expected to multiply multi-digit numbers on the next unit assessment.  The method to multiply these numbers will be determined by the student, but I’m wondering how many will gravitate towards the strategy (not just the process) that they understand.

 

 

Mindframes and Teaching

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This last Thursday I was fortunate enough to attend a conference around the topic of visible learning in schools. The conference had so much information.  I had to filter and compartmentalize the discussions and presentation.  One of the discussions revolved around John Hattie’s effect size and how schools can make learning visible in classrooms. The last day was dedicated to organizing a school plan that’ll be carried out through the remainder of the school year.

One of the more memorable pieces of the conference were the discussions that happened between the school teams.  My school sent a team of four teachers and two administrators to this particular conference. Discussing our views on teaching and learning was a powerful experience. Many members of the team don’t regularly work with one another, so meeting to discuss these issues brought about other views as we’re all in different roles . Not everyone thinks the same and each member of the team was willing to hear out different perspectives. As a team, we agreed that our school has some great initiatives happening right now. That affirmation was great to hear, but at the same time, we felt that there are steps we need to make to become better. In order to put these initiatives in place the school has to communicate the importance and reasoning behind these proposed changes.

This brought up another discussion about how change will not happen unless stakeholders are truly committed to the cause. Even if they’re committed, the initiative doesn’t reach its full potential unless the organization and individuals have mindsets that are aligned with the initiative. This type of thinking falls in line with Hattie’s Mindframes for Teaching. Teachers have beliefs that impact their teaching. That belief often stems from a self-developed mindframe. Understanding your own mindframe can help stakeholders better define their own role.  The mindframes are explained in the video below.

All of these mindframes are discussed in Hattie’s Visible Learning book.

Early in September my school was introduced to the idea of teacher mindframes. A staff meeting was designed to have educators analyze Hattie’s mindframes and reflect on their own. We plan on revisiting this topic throughout the school year. Understanding deep-seeded beliefs about our role in education can help bring awareness to how we think.  I believe that thinking impacts instructional decisions that influence student learning.