Every biology teacher is likely to need nutrient agar for a class at some point! It’s inevitable! I really like the dehydrated powders available from most biological supply companies, but sometimes you don’t have quick access or money in your departmental budgets.
Jessie Hoffman, a Fellow with the Woodrow Wilson Project, shared this link with me... A recipe that ingredients you can pick up at your local grocery store! The sources is www.eHow.com.
Click here to visit this page!
This lab is my own adaptation of a lab I used years ago, with some updates in procedure.
Some teachers like to have students count cells on microscope slides. Others find that this is very difficult, so they use printed images. In this version, you can use either, or both, OR have students use images available on the internet.
This posting includes the lab packet, and two files you can download to use as pictures for use on a computer or to print. Please note that in my lab instructions, students are not told how to calculate the minutes in each phase or the number of wedges to fill in on the graph. This is deliberate, and requires students to some problem solving! You may need to help you class through this process, but I encourage you to make them think!
Click here to download the lab instructions.
Click here to download the first root tip image.
Click here to download a second root tip image.
McC's Activity Bank
This blog has a collection of some of Dr. McConnell's shareable lab activities and resources. Feel free to use these files. To find out more about Dr. McConnell, click here to visit his home page.