##
* *Reflection: Checks for Understanding
Introduction to Non-Standard Measurement - Section 3: Independent Work

A struggle that several of my students had was measuring past the stopping point. While we had discussed, and I had modeled starting measurement at the starting point, several students went over the line for a stopping point. Students were struggling with the idea of "* about* how many cubes." I had to explain that it was important to measure as close to the line as possible, but not to go over. A quick estimation lesson would be great to add to this unit next time around.

*Accurate Measurement*

*Checks for Understanding: Accurate Measurement*

# Introduction to Non-Standard Measurement

Lesson 1 of 3

## Objective: Students will use non-standard measurement to measure various insects.

*40 minutes*

#### Introduction

*10 min*

To kick this concept off, I begin by reading a picture book with my students, Measuring Penny by Loreen Leedy. I really like this book because Penny measures her dog using all types of non-standard tools. It provides a great visual, and gets my students thinking about measurement. After we read the story, I lead a discussion about what non-standard measurement is, and how Penny used it.

*expand content*

#### Mini-Lesson

*15 min*

After reading and discussing the picture book, I explain to my students that for today's lesson we are going to use cubes as our measuring tool. I share that in Kindergarten we will use many tools to measure, including ruler!

Within the Houghton Mifflin math workbook, I have chosen a page that students will complete. The assignment requires my students to measure various bugs with unifix cubes. I like this page because it is fairly simple, which is great for an introduction to measurement.

There are some free alternatives online. 123 Homeschool 4 Me has a bug measurement activity, and education.com has a kindergarten measurement page with a selection of practice pages.

Students gather in front of the whiteboard where the assignment is displayed. My favorite part about this task is that each picture includes a line indicating where students should begin to measure and stop. This is a really important aspect of accurately measuring. I explain to students that the lines are there to help us know where we should begin and stop.

At this point, I lay down cubes and measure the first bug. This bug is 4 cubes long. I then take the cubes and measure the same bug, only I do not start at the beginning line, which will make my meaurement off. I tell my students that I changed my mind, and have now decided the bug is 3 cubes long. They all begin to tell me "NO, you are wrong!" My hope was they would catch this error. I ask a student to explain why my answer of 3 is wrong. He promptly tells me that I did not begin at the starting line. This leads to a quick conversation about how important it is to measure accurately.

Next, I ask students to come up to the board and complete several of the measurement tasks for all of us. Once we have completed several together, students are ready to work independently.

#### Resources

*expand content*

#### Independent Work

*15 min*

At this point, students head off to their tables to complete the measurement activity. I am walking around the room, and helping as I go. Several students had issues with counting** about** how many cubes, and were trying to be exact. I address this in my reflection.

With the exception of the estimation issue, I was happy to observe that students were measuring and working together well. I thought this was a good, basic introduction to non-standard measurement.

*expand content*

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- UNIT 1: Sorting, Sorting, and More Sorting!
- UNIT 2: Thanksgiving Math
- UNIT 3: Halloweeen Math
- UNIT 4: All About Numbers 0-10
- UNIT 5: Halloween Math
- UNIT 6: First Week of Kindergarten
- UNIT 7: Colors All Around
- UNIT 8: Sorting, Sorting, and More and More Sorting!
- UNIT 9: Non-Standard Measurement
- UNIT 10: Place Value
- UNIT 11: Addition/Subtraction
- UNIT 12: Comparing Numbers
- UNIT 13: Pattern Time!
- UNIT 14: All About Numbers 0-5
- UNIT 15: Thanksgiving Math
- UNIT 16: Holiday Math Centers