**The following post is a part of the Flipped Classroom series from the 2015 Summer Destination Program: **

Special thanks to Andrea Tice for submitting an example of a flipped lesson that she has prepared to teach students in her Gen Chem II course how to balance complex reduction-oxidation reactions.

The learning outcomes for this lesson include:

- Understanding the 4- and 6- step processes for balancing acidic and basic re-dox reactions by half-reaction method.
- Balancing re-dox reactions in acidic and basic media by half-reaction method.

To flip this lesson, Andrea needed to create the lecture in a format that students could watch at home, so they can do the application of solving these equations in the classroom. Andrea used **ScreenChomp**, a screencasting tool by TechSmith. This tool allowed her to put her powerpoint slide as an image in the tool on which she could write. If you select the image above, you can view her lesson on Acid Media, which is reminiscent of a Khan Academy style lesson, where she writes color-coded equations that the students can follow with ease.

To watch her lesson on basic media, select the image below.

Once the students have viewed the lessons and feel they are ready to try their hand at balancing these reactions, they will take a formative assessment reading quiz on the saplinglearning.com website. Their results to this quiz will be their entrance ticket to the in-class session.

Andrea describes her in-class activity as such:

“In class I will break students into groups of 3-4 students each. Each group will be assigned two different equations to balance, one acidic, one basic, from end of chapter problems to each group. Groups will write out solutions on the board. I will circulate the room assisting those who need help. After all groups have written both equation solutions on the board for all students to see, each group will give one step in the process as we summarize together.”

The benefit of flipping this lesson, for Andrea, is that it certainly allows for more class time for working out the problems, and it will free her up to monitor the students’ progress as they explore these equations.

Her summative assessment for this lesson is reflected in the chapter test and final exam. An example of a prompt that her students may receive would be:

Balance the following oxidation-reduction equation occurring in basic solution.

Mn^{2+} + H_{2}O_{2} -> MnO_{2} + H_{2}O

Thanks, Andrea, for sharing this great flipped lesson!