This week my students practiced writing a hypothesis. To practice writing a hypothesis have your students complete this engaging activity that gives the them a chance to practice their hypothesis writing. This activity requires a 2 liter bottle, water and tape (masking or painting). Prepare the bottle by drilling three holes vertically in a straight line about and inch apart. The holes should be slightly smaller than a pencil eraser. I have used scissors and twisted them until the a hole was made but a drill is much easier if you have it. Once the holes are drilled place some tape over the holes and fill it with water.
Your bottle is now ready for the class. Prior to getting started with the hypothesis practice have the students create a chart that looks like the one below making sure they save room to write inside the chart. If students are using an interactive notebook have them place this chart on the right side.
On the left side of the their interactive notebook students will record their initial observations and their sketch. When students are done with the entire activity it will look like this.
To begin this activity, walk around the room to each student so they can closely observe the bottle and record their observations. This is where you can emphasize details in their observation records. After walking around ask the class for a volunteer who isn’t afraid of water. Bring the student to the front of the class and sit them in a desk and give them a paper towel to put on top of their head (optional). The only purpose for involving a student is for dramatic effect and student engagement and it works very well! They shouldn’t actually get more than a drop or two of water on them if all goes well. While holding the bottle over the volunteers head ask the class to record their hypothesis about what will happen when the tape is pulled past the first hole. Ask students to write the hypothesis as an “if-then” statement. Have the students share their hypothesis with the class. Next, pull the tape past the first hole while holding it over your volunteers head. If everything is done correctly, no water will come out of the first hole. Students record their observations and record why they think it happened the way it did or any questions they may have. Move on and repeat this for the next two holes. Have the students make a hypothesis before each a new hole is exposed. Water will come out of the next two holes so I strategically have a trash can to catch the water and avoid getting it on the volunteer. Though this activity is simple, students love it.
I overheard one of my IEP students talking to the Coteacher and he said: “This is actually pretty fun!”
Try it out. Comment below on how it goes!