# Broken Ruler Fishing Task Cards

Subject
Resource Type
Common Core Standards
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Product Description
60 fish task cards for students to practice finding the length of an object that is not aligned with zero on a ruler.

Strategies students can come up with or that you can teach:
1) Cross out the numbers and start at zero (if it is from 4 to 7, you'd cross out the 4 and put a 0, 5 and put a 1, 6 and put a 2, 7 and put a 3, it is 3 inches/centimeters/millimeters long)
2) Count the spaces
3) Subtract

When I came up with this product I was trying to come up with a real-world reason students might have to use this skill. I find this skill is often assessed through paper and pencil or computerized tests in which you can't actually move your objects... and I wanted a more meaningful reason for them to practice this. I explain to them that they're going on a fishing trip and they caught a fish but the ruler on their cooler is broken or rubbed off, so they can't start the ruler at zero. The reason they have to measure the fish in the first place is they're only allowed to keep fish that are greater than ____ long. If it is less than that length they have to "throw it back." This way I can review the concepts of greater/less than, increase number sense, and get them to use a little bit of higher order thinking skills.
I've included the recording sheet I usually use with this, but it is incredibly long so I would suggest modifying it.

Before using these task cards I usually use my Broken Ruler Strategy Booklet (see link below) to have students practice different ways to solve these types of problems. https://www.teacherspayteachers.com/Product/Broken-Ruler-Strategy-Practice-Booklet-Teaching-Cards-3703172
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