I put students in groups of four and every person had an empty water bottle. I provided four brands of dish soap. They had to decide who was using each brand.
Their written directions told them to add 1/2 cup of water to the bottle and 2 drops (not 2 squirts) of one of the dish soaps I provided. They closed their bottle and shook for 15 seconds, then measured the height of their suds. They recorded the data for everyone in their group for comparison.
I love teaching kids how to analyze data. Analysis is basically making true statements about their conclusions. For this activity, I required at least two analysis statements. Their conclusion was to answer the original question.
You can get a FREE copy of the Student Write-Up for the Suds Experiment by subscribing to my newsletter. It gives you access to my FREE Resource Library! The write-up has teacher information and a front-to-back student sheet. It looks like this.
Yes, we had fun! We also followed the Scientific Method and it was a real-life product comparison activity. Who could ask for more? I found this great, almost free, experiment on Pinterest this summer, but I don't know who to credit...so, thanks to whoever posted this!
And some ways rely on calling up professional exterminators to do the job for you. dishwasher detergent
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