Comparing the Effectiveness of Common Antibacterial Cleansers. Experiment

Comparing the Effectiveness of Common Antibacterial Cleans
Comparing the Effectiveness of Common Antibacterial Cleans
Comparing the Effectiveness of Common Antibacterial Cleans
Comparing the Effectiveness of Common Antibacterial Cleans
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PRODUCT DESCRIPTION

This is a complete, 4 day lesson plan that includes:

1) 4 detailed lesson plans on a disk diffusion lab (see description below)- 16 pages total
2) 31 slide PowerPoint (see description below)
3) Entrance and Exit slips
4) Lab Report with Rubric

This is a lab I did with my 9th graders where we swabbed 4 areas (door handles, toilets, another teachers forehead) of the school using cotton q-tips and placed those samples on 4 sections of a Petri dish. Then we allowed 2 days for bacterial growth (no incubator required just a dark cupboard). Once there was sufficient bacterial growth we transferred the colonies onto a second Petri dish and allowed to grow for another 2 days. It was this Petri dish that we used to test 4 different types of antibacterial soap or cleaning solutions using eye droppers. Students wrote a conclusion paragraph evaluating the effectiveness of each antibacterial product.
This lab report has the students evaluate each step of the entire process. If anything happens to the bacterial colonies keep the first Petri dish as backup.
Very easy lab for biology students and extremely creative- I encouraged my students to create and test one 'natural' antibacterial product (such as vinegar and lemons solution) in order to compare to store bought products. Great way to show students the effectiveness of natural homemade cleaning products- which you can also spend a lesson talking about the environmental and health impacts of manufactured cleaning solutions

Format:
Students will be able to evaluate collected data
Students will be able to collect evidence to answer an experimental question
Students will be able to draw a logical conclusion to the experimental question using evidence to support their answer

Students will be able to demonstrate their understanding of:
1. Where the most/least amount of bacteria can be found in an area
2. Understand how disk diffusion works with antibacterials
3. How to design and carry out a scientific investigation independently
4. How to organize and process data from a scientific investigation
5. How to analyze collected data and make a conclusion with supporting evidence

Materials Needed:
Petri dishes with nutritional agar
Q-tips
Cleaning solutions such as windex etc
Eye droppers

This lab is extremely easy but informative for students. Can be manipulated and tweaked to suit your classroom. By far my students favorite lab

Includes:
Four days of differentiated lesson plans
Detailed, step by step directions of the lab including materials, directions, objectives, vocabulary, lab procedure and teaching techniques used to elicit student responses on higher order thinking questions.
Also includes descriptions of how the lessons benefit EL, IEP and EBD students
What will the student learn about this topic after this lesson? Where are they headed?

What they will learn:
1. What antibacterials are and examples of each
3. How to properly swab an area for bacteria using sterilization techniques
4. How to transfer bacterial collections onto a petri dish using sterile techniques
Where they are headed:
1. Where the most/least amount of bacteria can be found in the school
2. Understand how disk diffusion works with antibacterials
3. How to design and carry out a scientific investigation independently
4. How to organize and process data from a scientific investigation
5. How to analyze collected data and make a conclusion with supporting evidence

Powerpoint Presentation includes:
Bacteria vs Virus- examples of bacterial colonies.
Disk diffusion
Zone of Inhibition
Antibacterials- bactericides, bacteriostatics, residue and non-residue producing, antiseptics vs disinfectants and broad spectrum antibiotics

Multiple visual examples of:
Bacterial colonies and mold growing on nutritional agar
Zone of Inhibitions
Comparing the bacterial growth swabbed from multiple locations

Format:
Think-pair-share/ turn and talks
Written explanations
Whole group/small group discussions

Teacher notes included in comments

*Link to just the lesson plans:

https://www.teacherspayteachers.com/Product/Investigating-Bacteria-and-Anti-Bacterial-Lab-Lesson-Plans-4-1610025

Total Pages
Answer Key
Rubric only
Teaching Duration
4 Days

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Comparing the Effectiveness of Common Antibacterial Cleans
Comparing the Effectiveness of Common Antibacterial Cleans
Comparing the Effectiveness of Common Antibacterial Cleans
Comparing the Effectiveness of Common Antibacterial Cleans
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