“Knowledge can be best given where there is eagerness to learn.”—Dr. Maria Montessori, To Educate the Human Potential
I missed a phone call because I was out buying bait. Angler, I am not, but there I stood in line at Academy with a basket full of live worms and beetle larvae. Lucky for these worms, they were destined to live (well,
most of them) in our classroom rather than be skewered on a fishing hook. Of course, I also had to buy a bag of
dirt at Home Depot to provide our critters with a happy habitat. It sounds like some kind of bad City Girl joke, spending money on worms and beetles and dirt, but it turns out a box of chilled worms is only slightly more expensive than
a bag of sand, and as predicted, my investment was rewarded with lots of squealy fun and fabulous
invertebrate investigations.
I have been contemplating worms for a while, and serendipity stepped in when a recent issue of
Science & Children arrived with a free sample chapter from
More Everyday Science Mysteries—
on worms! Wahoo! So, we began with a short story featuring two boys who are wondering about worms. After the story, we reviewed the definitions of hypothesis
"what you think before you investigate," observations
"information you gather with your senses," and drawing conclusions or making inferences
“kind of like an answer.” One student pointed out that scientists use tools to help with their observations, including a hand lens, binoculars, a balance to measure mass, a light, a ruler to measure length, and drawing tools or a camera
“in case you can’t take the specimen with you.”
We then recorded what we "know" about worms:
“Worms loosen the soil by wiggling a lot.”
“Worms help the soil stay fertilized by pooping.”
“Worms are fish food.”
“Worms like wet surfaces.”
“Worms can grow long.”
“They all [males & females] look the same.” “Some don’t look the same.”
“A female gets a ring when it’s pregnant.”
“Worms make tunnels. That makes space for plant roots.”
“After a rain, worms come out of the ground onto the sidewalk.”
“Worms die and shrivel in hot, dry places.”
“The rear and head are the same.”
"Hmm. How could we find out more?"
"We could get some worms and look at them."
"Well, it just so happens that I brought a few of my friends to school today . . . "
It was only then that the live worms were revealed. Like the crew members on
Oprah's "Favorite Things" show who suddenly appear in the aisles with fun freebies for all, Franny and Mrs. D. brought out big trays loaded with individual trays, each bearing its very own live worm for observation.
"Yay!" cheered the children.
Our task for the day was to observe the worms and record our observations with drawings and words. I explained that a scientific illustration must portray organisms as they exist in reality (i.e. In this case, we wouldn't be drawing our worms with top hats and bow ties or big, eyelashed eyes). I had prepared an Invertebrate Observation record form with spaces for an illustration, a description of the invertebrate, a description of how the invertebrate moves, and for responses to “What do you wonder about this invertebrate?”
“Do we each get our own page to work on, too?” "Yes, everyone gets their
own record page." More spontaneous applause (I kid you not).
A squealy clamor of delight erupted as children began to experiment with using their sense of touch to explore the worms.

“I’m not gonna touch a worm, I’m not gonna touch a worm . . . Ewwww, I’m touching a worm!” 
After all that frenzied observation, the worms and I were both tired.
We helped the worms into their new habitat and then briefly shared discoveries (because, as usual, we had run out of time!):
“They are very active when you put them on your hand. They tickle your hand and they are very flexible.”—K.E., 3rd grade
Worms have a rough spot under the front of their bodies. “I was surprised that it felt like a reptile.”—M.M., 2nd grade "Maybe to help them grip on slimy surfaces," suggested another student.

Worms are difficult to measure. "It kept on getting longer and longer so it could get back in the tray."--D.Z., 2nd grade

Worms have an interesting way of moving.
"It sort of scrunches its body up and then extends its body to move forward."--M.M, 2nd grade
“The worm first stretches its head forward and then pulls its rear end. Also it curls up like a ‘J.’”—M.H., 3rd grade
“They bunch up to move.”—K.B., 2nd grade
What we wonder about worms:
"My worm was a female. It had a ring on it. Do females always have a ring? Are the babies in the ring? Are the worms with rings really all females?"--N.K., 1st grade
"I wonder how do you tell a male from a female."--M.M., 2nd grade
"I was wondering how worms communicate with each other."--D.Z., 2nd grade
"I wonder how old it is."--A.D., 1st grade
"Which end is its head?"--K.E., 3rd grade
"How long do worms grow?"--S.B., 3rd grade
“What does the mouth look like?”—K.B., 2nd grade
“I wonder where the eye is or if it has one. I also wonder if they have noses.”—M.H., 3rd grade “How does it live in dirt?”—D.O., 1st grade
“Does it get tired?”—J.J., 1st grade
“How do they breathe?”—C.G., 3rd grade
“What does it eat?”—S.G., 1st grade
“I wonder why it gets itself in a knot.”—C.J., 3rd grade
The children’s questions were great, but I was disappointed when I looked through their illustrations and written descriptions. One description read, “It is brown. It is 16 cm.” Many others were similarly superficial. I decided we should take a step back and give detailed observation another try. “Scientific illustrations and descriptions need details that give information about the creature,” I told the children. “Imagine a person who lives in a desert climate and has never seen an earthworm. What would you tell them so that they can imagine an earthworm? ‘It is brown and it is 16 centimeters’ doesn’t give that person very much information. Based on that description, it could look like this.”

Another student had written, “
It has a head and I think I see the mouth.” “That could be an elephant!” I said. “Tell me more.” I also reminded the children that they had told me about tools that scientists use to enhance their senses, such as a hand lens, but I hadn’t seen many of them taking advantage of this tool yesterday.

Once again, each child received his/her very own worm for observation.
This time, having dispensed with the boisterous fun of worm-handling yesterday, the children settled into more serious and detailed observation: 
“I can see a purple vein that runs down the worm.”
“The worm has tiny hooks on its body.” “That’s probably why it felt rough!”
“Mine is leaving a wet trail as it moves.”
“There’s little lines that go this way on each segment.”
“Oh! Mine is pooping!” “Ohh . . . how do you know?”
“Well, I was looking at it in the magnifying glass and this end was eating and then a while later stuff came out of this end.” “So does that give you some evidence about which end is the head and which end is the tail?”
When we came together to share, the children read from their more detailed descriptions to guide me in creating a more accurate illustration of a worm.
The discussion that followed was fascinating and full of more great questions:
“Do worms move head-first?” “Do they reverse?”
One child thought back to our fossil dig, and asked whether worm poop creates glauconite in their environment like the clams did as they ate and pooped and ate and pooped millions of years ago at the Stone City site we visited. This launched the poop portion of our discussion. The children observed that while the clams ate and pooped and ate and pooped in one spot, "worms are more active." Hmm. We’ll have to consult a prehistoric poop expert. I know just the guy!
“My worm didn’t have that line,” offered an older child. "Interesting! What could that mean?"
“Maybe it’s not a vein?” "Well, if the line has to do with the circulatory system, they would probably all have one, right?"
Earlier when we discussed the “vein,” another child had suggested, “I think that line is what takes the poop out of the body.” We returned to his hypothesis. "If you can’t see the line on yours, does this other explanation make more sense?" “Yes, maybe it’s part of the digestive system and mine hasn’t eaten anything lately.” “But mine had the line and I didn’t see it eating,” chimed in another student.
"You’re not eating right now, but if we opened you up, would we find evidence of your lunch?" “Yes, my milk came out but not the rest of my lunch yet.”
(Across the room, Mrs. D. sang, “Too much in-for-ma-tion!” while a smile crept across my face. It is in these moments that I am reminded that a nice, comfortable office job would be awfully boring!)
Maybe this particular worm with no line had pooped out its most recent meal and hadn’t eaten again yet. We then recalled that whales have pink poop because they eat krill and caterpillars have green poop because they eat leaves. “But our poop is brown!” Well, we eat a mix of things, and as the children pointed out, when you mix many colors of paint on your paint palette, it turns brown.
When we finally veered away from poop for a while, more great questions emerged:
“What happens when the worm is injured?”
“How you tell the age of the worm?” “How long does it live?”
“Do worms show signs of death or illness?”
“How many types of worms are there?”
“Do worms have a brain?”
“If a worm becomes angry, what does it do?”
“If something’s in the way, what does the worm do?”
“How does the worm respond to touch?”
“How does a worm sleep? Do they rest?”
“Do they sleep in the dark or the daylight?”
“What temperature do the worms prefer?”
“That’s like my Science Fair experiment with the flowers in cold water and warm water!” shared another student. Yes! And you had another, accidental variable (the cold water flowers were kept in the refrigerator). What was it? “Light—We could test whether the worms like light or dark!”
Another student suggested we find out how much water worms like in their environment.
This prompted thoughts about our holes and the follow-up investigation of soil, “Do they like the soil by the building or from the grassy area?”
As I struggled to record this rapid-fire curiosity, one of the children commented, “Boy, that’s a lot of questions—even upside-down and sideways!” Inquiry in action!
Walking out the door to go home, one eager learner told me, "If I have time after school, I'm going to try to get on the internet and look up more about worms." These worms have got us wondering!
Worm websites:
The Adventures of Hermann
Earthworm anatomy
“No Backbone Back Beat”
“Dirt Made My Lunch”
What We’re Reading:
Diary of a Worm by Doreen Cronin
Wiggling Worms at Work by Wendy Pfeffer
The Magic School Bus Meets the Rot Squad
The Gardener by Sarah Stewart
How Groundhog’s Garden Grew by Lynne Cherry
And the Good Brown Earth by Kathy Henderson
Jack’s Garden by Henry Cole