On Friday, Math at Home presented at the Opening Minds conference in Chicago.  We spoke about the Math at Home site and our upcoming Professional Development series, soon to be available through the Gateways to Opportunity ilearning system.(More to come about that exciting project over the next couple of weeks). At the end of our talk, we presented the attendees with buckets of counting worms and walked through some possible learning activities that could be done with them.  Although the worms we had were a bit different, they reminded me of this post from 2013.

Have you seen these?  These are called Inchworms and they are actually one inch long.  That means they are standard units of measure (because an inch is an inch is an inch) while looking like a non standard unit of measure.  When children use these to measure, they might say, “It is 3 inchworms long,” which also means that it is actually 3 inches long. This is an important step in children’s understandings of measurement, which can be reinforced by laying these inchworms out next to a ruler to show that they really are one inch each.

It might be fun to introduce the “Inchworm Song” as well.  If you don’t know/remember it, it goes like this.

“Inchworm, inchworm, measuring the marigolds
You and your arithmetic, you’ll probably go far.
Inchworm, inchworm, measuring the marigolds
Seems to me you’d stop and see how beautiful they are.

2 and 2 are 4, 4 and 4 are 8, 8 and 8 are 16, 16 and 16 are 32.”

## 7 Replies to “Inchworms”

1. Jennifer Sargent says:

Love these ideas and the chant is charming. Will be trying it out today. Wish you would give resource for the inchworms now I will be searching for them…

1. Jen says:

I can do that. Let me take a look and I will get back to you:)

2. Myra says:

Great activity to teach children to identify animal measurements.

3. Sheryl says:

Love the inchworms where can I get them

4. Anonymous says:

What a wonderful activity!