Tag Archives: inquiry activity

Hypothesis Practice- Get your Students to Practice Hypothesis Writing

Hypothesis Practice

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.

3 hole bottle









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.

Student digital example








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!


Interactive Science Notebook Activity

3 hole bottle inquiry activity

As I introduce the scientific method one of my favorite activities is the three hole bottle activity. It is a great way for students to practice writing a hypothesis and making observations. To start you, need a 2 liter bottle with three holes drilled into it in a vertical line in the middle of the bottle. In the picture they are behind the tape. They are slightly small than the diameter of a pencil eraser. I have the students set up a chart on the right side of their interactive notebook as seen below. To begin, I take the bottle filled with water and the tape over the holes (as pictured) around the room to each student so they can record as many observations as possible . They record these observations in the first column titled  “cue column” . Next, for dramatic effect and to discuss bias I take one student volunteer to the front of the room and hold the bottle over their head (after I give them paper towel) and ask the class to make a prediction as to what will happen when the tape is pulled past the first hole. They record that in the first column. I then remove the tape from the first hole while holding the bottle above the volunteer student’s head (only a few drops usually comes out of the bottle). Students the record their observation and then make a hypothesis about what will happen when the tape is pulled past the 1 and 2 hole and then all three holes. To finish I turn the bottle on it’s side and have the students share their hypothesis with the class. Students then make a conclusion about their observations and a class discussion about what happened.  On the left side, students were given the option to draw a graphic that explains everything that happened or they can fill the page with a written description (since a picture is worth a thousand words). I offered a homework pass for the most creative left and right side notebook pages with accurate descriptions and properly writing hypotheses.