## Reflection: High Expectations Bubble Bubble Everywhere But Not a Drop to Drink - Section 2: Beginning The New Activity

Student Work Reflection:

It was interesting to watch student groups work through the measurements for their own recipe.  I think in fractions and immediately considered the four to one ratio as really five equal parts that must divide each ounce of solution mixture.  Therefore 4/5 of each ounce is Dawn and 1/5 of each ounce is Glycerin.  Most of my students worked with decimals instead and considered the four to one ratio as a whole for the two ounces total.  As you can see from their work they were looking for a decimal quantity that when you quadrupled it and added the two together created 2.0 even ounces.  It was interesting to listen to their group discussions around 4 because 4(4) = 16 and 4 + 4 = 20 so if you adjust to the decimals 0.4 and 1.6 it worked.  Some of these decimal groups had a hard time estimating the measuring however when it came to mixing the solution because measuring cups are in fractional increments.  My smallest measuring cup measured in ounces down to a 1/4 of an ounce.  The mixing part was difficult for them.

Bubble Solution Tips:

When you mix the solution and allow it to sit for a few days, put the paint in the solution then and allow the paint to sit and dissolve in the mixture also for best results.  We put in the paint the day we used the solution and it did not work at all.  Once it sat again for about another week, the paint worked beautifully with the paper and popping bubbles.  Also, be generous with the amount of paint in each solution.  We discovered using straws as bubble blowers (inside not outside the school) was the best method of creating bubbles.  I tried several homemade bubble blower suggestions and they all failed miserably.

High Expectations: Reflection on Student Work and Paint Tips

# Bubble Bubble Everywhere But Not a Drop to Drink

Unit 3: Solving Linear Equations in One Variable
Lesson 19 of 29

## Big Idea: Using part to part relationships create a homemade bubble solution while solving rational equations at the same time!

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3 teachers like this lesson
Standards:
Subject(s):
Math, solving equations, Algebra, proportions, 8th grade math, ratios, master teacher, proportional relationships
50 minutes

### Christa Lemily

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