In Module 3, Lesson A1, the students use a meter strip to practice meter strip subtraction. Here is a file you can use for that purpose. When you print the file, be sure to check "actual size." The first time I printed this the measurements were off a lot, but it was set to "fit" and that seemed to be the problem. You will see in the example I made there are only centimeters showing. Trimming off the inches made it easier to read.
After trimming each section at a point that made it easy to line up, I taped the pieces together. If you have an easier process or an inexpensive source of meter strips, please comment and share your suggestions. When you encounter a "high prep" lesson in the modules, consider what you have that you can just repurpose (possibly just demonstrate whole class with a meter stick). If you taught it whole class, could your students practice with this task in a small group at a center? A room-full of kids wielding meter sticks might get crazy, but I would think a couple kids could sit next to a meter stick on the floor and practice the subtracting a ten task. This way the kids can have the experience without you having to make or purchase a class set of the materials.
Module 3 for Second Grade has under the suggested materials one set of large place value card for the teacher and a set of small place value cards for the students 1-500 (pg 1) Here are some templates of small place value cards that you can use. The only difference between the sets is that the first document has plain cards and the second set shows the value of the digits. You only need the first page for this module. The template is set to print on 8 1/2 x14 paper.
Why Would I Want to Use That?
With so many mathematical models and tools, how do you decide which ones are worth investigating? We have created this blog to help faciliate that discussion.