Teacher Feature: Three Year Olds Explore Blood

It’s Teacher Feature Thursday!

This week we are featuring Katie Heimsath and Laura Muniz of the three-year-old Koala classroom.  Katie and Laura noticed a common interest among the children in human bodies and what they are capable of, so a unit on the human body commenced.  I joined them for a visit to the National Gallery of Art where they took a closer look at blood, and what goes into it.  Blood is a complex concept and this lesson is a great example of how we at SEEC are thinking about how to make a complex topic developmentally appropriate, approachable, hands-on and engaging for young children. Below you will find images and descriptions of the lesson, and a reflection from Katie and Laura.

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Here are a few images from their lesson on Blood:

SEECstories.com.pngWhen the class first sat down, Katie asked the children to look at the painting Red Dance by Kenneth Young, and share what it reminded them of.  The piece reminded children of a brain, blood, and strawberries.  Katie shared that the painting reminded her of blood too, and that was what they were going to learn more about that day.  The class had already learned about how hearts and veins move blood around the human body, but now they were going to look at blood more in depth and see what elements make up blood.

5Katie asked, “Who has ever cut themselves and had blood come out?”  Immediately the children began to roll up sleeves or pant legs to display a cut, and several told stories about how they got their boo-boos.  Katie asked, “Did your cut keep bleeding forever, or did it stop? Is your cut still bleeding or has it stopped?”  The children said they weren’t still bleeding anymore, and Katie explained that cuts stop bleeding because a hard scab is formed by some platelets, just one part that makes up our blood.

3To take a closer look at blood, Katie read A Drop of Blood by Paul Showers.  This book is told from the perspective of a vampire and monster, and the children enjoyed the silliness of the illustrations, while the text provided information about what blood is and what it does.

4Katie asked the children what blood looks like when we cut ourselves, and the children said, “red”.  She explained that when we bleed it looks red like the red dots on the painting, but if you look really close, with a microscope, you can see the different parts of blood.  While the children are not as familiar with the concept of a microscope, they are very familiar with magnifying glasses, and Katie brought some out to make the connection that a microscope helps us to see small things that we can’t see with just our eyes.

SEECstories.com (8).jpgAs they went through the book, Katie paused to talk about white blood cells, red blood cells, plasma, and platelets.  The children passed around pictures of each to get a closer look, while Katie explained why each part is important for our bodies.

SEECstories.com (1).pngAfter reading the book it was time to make their own blood!  This activity provided a hands-on and engaging way for the children to practice what they had just learned.  Katie brought out three “drops of blood”, which were three circles of contact paper.  She said that the contact paper is sticky and looks wet, so it would be like the plasma, which keeps everything together. Then the children came up in turns to add red blood cells, and white blood cells (circles of red and white paper).

12To finish the blood, they added platelets, the small blood cells that come together to form a clot and stop a cut from bleeding.

113SEECstories.com (15).pngAfter making one blood cell together, the class split up into two groups and worked together to make more drops of blood.  After they finished, there were some stray blood cells on the gallery floor, and the children were excited to help pick them up to leave the space clean.

SEECstories.com (16).pngBack at school in the afternoon, the class made their own blood cells that they could take home.

112Then it was time to make more blood, but this time it was an edible version for their afternoon snack!  First the class helped mix red food coloring into yogurt, which was the plasma.

11Next they added sliced grapes as the red blood cells.

7For the white blood cells, they added sliced bananas.

6And finally, they topped off their blood snack with red sprinkles, acting as the many platelets found in our blood.

1The only thing left to do was enjoy eating it!  By making blood in another way, the children experienced multiple exposure to the same concept, which helps to reinforce it.  They were also actively involved in the process, which not only makes it more fun, but helps to strengthen their understanding of the concept.

Reflection from Katie and Laura:

For the first several weeks of school, our class explored their similarities and differences through lessons on favorite things, what their families are like and identifying and expressing their feelings. We noticed that many children in our class were experiencing some major transitions: caring for new siblings, finishing potty training, trying new foods, even adjusting to a new school! Our daily routine, including bathroom time, nap time, lunch time, play time, etc. led to discussions about how and why our bodies need all of these activities. So into the Human Body we went! We divided this unit up by the different body systems; it was a simple way to break down a complicated topic to a three-year-old level and gave us the ability to answer specific questions our class had.

We first explored how people experience the world using their five senses and learned that our brain helps us interpret it all. In the weeks following, we learned parts and functions of the digestive system and investigated our skeletal system. After that, we dove into the circulatory system. Early in the week we learned about the parts of the body that move blood around like our heart, veins and arteries. This particular lesson was all about blood. Our class had a lot of questions about the color of blood, what its job is, and why it is wet. Like a lot of children, our kids viewed Band-Aids as the fixer of all problems. As teachers we noticed a great opportunity to talk about how our bodies use blood to make scabs. Our objectives for this lesson were to address and answer those specific questions as well as practice working together as a group. Through the lesson, they learned the four different parts of blood and how those parts work together to keep our body healthy. Teamwork is a hard, but important skill to practice, so we built it into the lesson with a small group activity.

We chose to visit Red Dance by Kenneth Young at the National Gallery of Art because it is so visually stimulating and looks similar to actual drops of blood. It’s located in a gallery that is quiet and big enough to accommodate a group of curious and wiggly three-year-olds who need some extra room. We brought printed and laminated illustrations of four different parts of blood and small magnifying glasses to accompany the lesson. We passed these objects and pictures around so that the class could have something to hold and focus their attention on, as well as connect new vocabulary to.

Due to the length of time we had been spending on our bodily processes, our class had a solid foundation of ideas and lots of vocabulary to build on. They connected past knowledge (“there must be a lot of blood going around my small intestine if it’s moving all those nutrients outta there”) and asked questions to deepen their learning. They were engaged and curious since the book we read, A Drop of Blood by Paul Showers, made this very technical topic a little more exciting. By giving them objects to hold and engage with, we helped make a difficult concept more concrete. We were able to point specifically to images of parts of the blood that we can’t see with our own eyes, and explain the function of each one.

We were surprised by how well the small groups worked together in the activity to make drops of blood, and also at how they worked together to help clean up. We used some small materials, such as hole punched paper circles, that blended in with the wooden floor, and it was quite funny to hear some of our class saying, “Oh! There are more platelets over there!” and “Get that red blood cell!”

In the afternoon, we made a “blood snack”. The teachers did all of the cutting of the fruit, but the children helped by dividing, measuring and sorting all of the ingredients. It incorporated their fine motor skills, tested their one-to-one correspondence, and recalled a lot of the vocabulary we learned in our morning museum visit. The group also practiced turn-taking since there weren’t enough individual helping jobs to go around. Our class doesn’t have too many picky eaters, but for the few who are usually hesitant to try new things, this activity made it a bit more exciting to have something unfamiliar at snack.

An element we would have liked to add, but didn’t get the chance to, would have been a gross motor component. Our class was focused in the museum, but we realized after the fact that we could have played a game on the playground to extend the topic. It certainly helped their need for movement to have an activity in the museum, but playing a chasing game outside or teamwork game as a group would have been another fun experience.

While we had success with our activities, some of the materials we used to make the drops of blood made it difficult to transition out of the gallery quickly. If any other element had become more complicated, the activity would have become too complicated to do in small group, and we would have needed to make the drops of blood as a singular group.

After our exploration of the circulatory system, we continued learning about muscles, our respiratory system and discussed germs and exercise. Since our class showed continued interest in learning how their bodies worked, we kept our unit going strong for several weeks!


Katie and Laura continued to explore the human body for a few more weeks. Stay tuned for the Human Body Round Up for more ideas from their unit!