By Helen Benton, Teacher of Students with Visual Impairments, Texas School for the Blind and Visually Impaired (TSBVI)
In my high school class at TSBVI, I served two students with CVI (one print user, and one who uses pictures and videos for instructional purposes), one DeafBlind student who uses print and intervener services, and one student with no vision who uses tactile symbols and auditory information. We were also a hybrid classroom due to COVID-19, so some of the students had access to school over Zoom, and some were in my classroom.
In this unit we started with an overview of bacteria, then did an experiment, and followed by a candy-matching activity.
Overview of Bacteria
I created a PowerPoint presentation to introduce the students to the topic of bacteria. The information shared was as follows.
What we wanted to learn:
What are the different shapes and sizes of bacteria?
Bacteria is a living organism which is SO SMALL we cannot see it or feel it.
Despite its tiny size bacteria can do all kinds of amazing things.
Some bacteria is harmful to people and can make us feel sick!
Other bacteria is helpful to our bodies.
The BAD Bacteria
Some bacteria is harmful to our body.
I could make us feel sick, which we might call an infection.
It could make holes in our teeth if we do not brush them.
Questions about BAD Bacteria:
Name 1 type of harmful bacteria: _________________________
What are 2 things a bad bacteria could do inside your body?
Give your energy and strength
Help your bones and hair grow
Make you sick and give you cavities
The GOOD Bacteria
Some bacteria is helpful to our body.
It can help us digest our food.
It is healthy for our body to have some good bacteria in it.
Good bacteria can be found in many of our favorite foods!
Food with helpful bacteria:
Video– Bacteria: Energy Producers of the Future?
Watch this video to see the way bacteria in dirty water can actually help us produce electricity!
Questions about GOOD bacteria:
Good bacteria can help our bodies. Good bacteria can also help….?
What food has good bacteria in it?
Yogurt and Pickles
All living things are composed of cells.
Plants and animals are made of many many cells which fit together to make up all of our parts.
Bacteria is made of one single cell- this is why they are so tiny.
Unicellular = made of only one single cell
Shape and Structure
What does unicellular mean? How many cells does a bacteria have?
Some bacteria have a little tail structure that helps them move. This is called _________________.
Hypothesis: ______________________ will have the most bacteria on it, because ___________________________________.
Invite each student to create a hypothesis.
Spread on “agar” special bacteria growing jelly
Wait for bacteria to grow!
See which grows most!
Learn the shapes and names of different bacteria by exploring candies- with touch and tongue. Students sort and label the different types of bacteria forms before eating. Identifying bacteria by their shape helps doctors and scientists understand what different kinds of bacteria do, and whether they might help or harm our bodies.