In brief, this lab requires students to calculate the number of airborne bacteria in the classroom. They are given a conversion factor (50,000 bacterial cells per cubic meter), and must brainstorm what they need to know and the materials they will need. They then design a protocol to calculate the number (by accurately measuring the dimensions of the room, and applying a volume formula, LxWxH). To conclude, they average class data, and answer analysis questions. There is a link to an article, which can serve as an introductory resource, or an extension activity.
A. NEXT GENERATION SCIENCE STANDARDS HEREIN
DCI’s: LS1.A Structure and Function
Cross Cutting Concepts: Cause and Effect, Scale, Proportion and Quantity
Scientific and Engineering Practices:
Asking Questions, Planning and Carrying Out Investigations, Analyzing and Interpreting Data, Developing and Using Models, Using Mathematical and Computational Thinking
"Food Chain Model Game" is a fun, inquiry-based activity in which students write rules to a game that models food-chains. It is NGSS Aligned.
Get it here: Food Chain Model Game
"Populations Lab " walks students through two ways to estimate the size of populations, and then asks students to design/carry out a study to estimate the size of a local population. It is NGSS Aligned.
Get it here: Populations Lab
B. SUGGESTED USES
Prior Knowledge: No specific prior knowledge is required for this activity. It serves as a supplemental problem-solving activity that incorporates basic math and spatial skills.
Implementing the Lesson:
Materials and Setup: There is very little setup for this activity. You will need meter sticks for students, and the lab printout. There is a link to an article that you may print out, which can be found in the answer section.
One of the benefits of this activity is that it is useful for many different grades. It is general enough to be used for science class (I use it in my science classes), or a math class.
My students have a lot of fun with this activity. If yours liked it, there are more like this at my TpT store:
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