Mitten Science

Mittens keep our hands warm, but are mittens themselves warm? That's the question Selina Smith of the Classroom Magic blog posed to students in her mitten investigation.

Using inquiry science, students discovered that  mittens keep our hands warm because they trap our body heat, but mittens alone are not warm at all. Selina pairs this investigation with the book, The Mitten, by Jan Brett. Visit her blog to download the complete directions and handouts for the activity.


More Mitten Investigations
Selina's blog post intrigued me right away. I like her original question because it's easy to understand and can be explored with a simple science experiment. This activity also started me thinking about other mitten experiments that would be very easy for students to explore. A great follow up to her activity would be to have students brainstorm a list of mitten questions to investigate. Here are a few mitten of MY questions:

• Are thin cotton mittens as effect as thick thermal mittens for keeping hands warm?
• Do gloves keep hands as warm as mittens?
• Do hands get warmer the longer they are inside the mittens? 
• How does the outside air temperature affect the temperature of hands inside mittens? (If you are wearing mittens indoors will your hands be the same temperature as they would be if you were wearing them outdoors in cold weather?)

Designing Reliable Experiments

If your students are new to science inquiry, I would suggest choosing one experiment to do as a class. Later your students can choose another question to explore with a partner or a team. Download the Science Experiment Lab Write up from Teaching Resources before you begin.

To get started, give each student a blank copy of the form. Work through the various parts of the write up together, starting with the question and hypothesis.

Discuss how to design an experiment that will be reliable because this may be a new concept for elementary students. They tend to think that if they do an experiment one time, the results are "proof" that their hypothesis is correct. Experiments can be made more reliable by changing only one part of the experiment at a time (the variable), repeating the experiment, and measuring carefully.

After you design the experiment, let each team carry it out and record their results. Walk them through the remaining steps to draw conclusions and complete the science lab write up.

Can you think of other mitten questions to investigate? How would you use this activity in your classroom? Visit the Science page on Teaching Resources for more investigation ideas!

Visit Teaching Resources at http://www.lauracandler.com

Hands-on Water Cycle Fun!

Now that I'm retired, I often miss working with children; children are my inspiration and the classroom is my laboratory! Recently I accepted a position at a local school to work with kids during their year round intersession program, and I had the pleasure of teaching science to 5th graders for 3 days. I had a wonderful time teaching them about the water cycle and weather, especially since I was able to incorporate a hands-on activity and an exciting demonstration into our lessons.

One activity was adapted from a terrific idea shared with me by Pat Calfee, a former elementary teacher who is now an educational consultant. When Pat was teaching 2nd grade, she used plastic rotisserie chicken containers to have her students create mini water cycles.

Because 5th graders need to know the full water cycle including transpiration and run-off,  we modified our mini water cycles slightly. Each team set up their own mini water cycle by adding a rock to represent a mountain, grass for the vegetation, and a small pond made from aluminum foil and filled with water.

On a sunny day, the best way to power up the mini water cycle is to close the container and put it in the sun for several hours. As the water warms up, it evaporates and then condenses on the inside of the plastic lid. The water then "rains" on the environment inside the container and runs off to form little ponds. Unfortunately, the weather called for rain on the day we were doing this (Murphy's law!). So I brought a large lamp from home that gave off a lot of heat, and we put the containers under the lamp. Soon we were observing evaporation, transpiration, condensation, precipitation, and run-off!

Those containers were a super way to give students hands-on experience creating a water cycle. It was wonderful to be able to have something concrete to observe when discussing these concepts.

Another way to observe a water cycle in action is to create a Cloud in a Jar. This is a teacher demo since it involves boiling water and a lit match, but it's a fun way for students to observe how clouds form. You can find the directions for this activity in my Science File Cabinet on Teaching Resources. The directions include a set of follow-up questions to help students grasp the essential concepts.

A great way to help kids identify examples of condensation, evaporation, and precipitation in everyday life is with my Parts of the Water Cycle Task Cards shown below. I've even added images of all 32 task cards that you can upload to Plickers and use for assessment questions!

What are your favorite activities to teach the water cycle? Please share!