Two-column tables. They seem like such a simple tool, but so much learning can happen when working with them. And today we are going to explore how and why to use two-column tables in math. These are especially useful for comparing units of measurement. These circus-themed conversion worksheets will help kids see the connections between different units of measure and standard and metric conversions.
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Note: This is a guest post from Rachel of You’ve Got This Math.
Larger and Smaller Unit Conversions:
Two – columns are perfect for comparing and exploring larger and smaller units. All through our lives, we are faced with units that don’t quite match.
We may be faced with a problem of which item is a better cost…but one item is measured in gallons and the other in quarts. You have to know how many quarts are in a gallon to solve. And if you don’t know that four quarts are in a gallon, you will struggle in finding which one is the better price!
Working through a two-column table gives children the opportunity to practice a certain skill over and over.
For example, if I’m working on a two-table column that focuses on gallons and cups, I’ll get to practice over and over that 16 cups equals 1 gallon.
I get to practice taking my six gallons and multiplying them by 16 to see that I have 96 cups.
I also can take my 32 cups and realize that there are 2 gallons in 32 cups because of 32 ÷ 16 = 2.
Using the Conversion Worksheets to Find Equivalents:
Another benefit of working with two-column charts is that children can work on finding measurement equivalents…and this can help them as they face algebra problems in the future.
Two-column charts can help children practice figuring out what operation is being used to get the equivalent.
Seeing Inverse Operations:
Another benefit of two-column charts is that children get to see and practice inverse operations. To work through converting mm to cm, children will be working with the number 10.
They can see that if I have 20 mm I have to divide by 10 to find out how many cm I have…2.
But I use the inverse to go from cm to mm. I can take 5 cm, multiply it by 10, and see that 5cm = 50 mm.
Measurement Conversion Worksheets:
Since two-column charts have so many uses, I created a free printable conversion worksheets to allow your children to work through a few examples.
Each of these worksheets focus on the relative sizes of measurement.
This set of 5 conversion worksheets help kids work on these measurements:
- Centimeters to millimeters, millimeters to meters, and centimeters to meters
- Inches to feet, feet to yards, and inches to yard
- Cup to gallon, pint to cup, and quart to cup
- Quart to gallon, pint to gallon, and quart to pint
- Ounce to pound, gram to kilogram, and miligram to gram
Now your little ones get all the learning that comes with two-column charts and they get to review how to convert all sorts of different units of measurement!
More Measurement Resources to Try:
- Simple Metric Conversions Game | Easy card game
- Estimation & Measurement Challenge | Exploring volume
- Exploring Measurement in 3rd Grade | Various measurement, area and perimeter ideas
Rachel is a homeschool mom to four little ones, ages 2 to 6. She is a former public elementary teacher, and has recently begun blogging at her page You’ve Got This. You can also find her on Facebook and Pinterest.
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