 |
| Teacher Trainee giving a lesson on Carbohydrates |
This teacher trainee had given lessons last week, so the students were familiar with her. She started with the homework assignment first. She had a photo of mono-, di- and poly saccharide molecules on the overhead and she reviewed the structure with the students.
Problems 1 and 2 both dealt with molecular structures. She kept asking questions.
 |
| Students trying to find answers to crossword puzzle |
Next, she did a demo on an overhead. She added corn starch on one dish and glucode on a second dish. She asked; if I drop iodine on
top of the materials, what color will they turn?
She performed the demo and students quietly followed her.
They realized that corn starch turned blue when iodine was added and glucose stayed
brown.
Next, a class competition. Teacher gave a crossword puzzle on a paper she had made by herself and there was a competition which group can finish first. It took about 15 minutes for the first group to get the right
answers. Reward was a lollipop. There was a true excitement in the classroom.
She explained again the structure of a carbohydrate and a person who discovered
it. Emil Fischer won the Noble prize for the discovery.
The Nobel Prize in Chemistry 1902 was awarded to Emil Fischer "in recognition of the extraordinary services he has rendered by his work on sugar and purine syntheses".
https://www.nobelprize.org/nobel_prizes/chemistry/laureates/1902/index.html
https://www.nobelprize.org/nobel_prizes/chemistry/laureates/1902/index.html
 |
| Crossword Answers |
New topic was proteins. She told the student; write the title
proteins. Where do you find
proteins? She wrote all the notes on an overhead and kept asking questions. Building blocks: amino acids, which contain carboxyl groups
and amino groups. She drew the structure
on the board. Students quietly copied
all the notes into their notebooks. She also mentioned peptide bonds.
Lab exercise, instructions are on p. 288.
One boy came in late.
Students worked independently. The lab instructions only gave a brief
description of the topic and the kids had a freedom to design and perform the experiment
on their own. The teacher asked students
to write down the observations and a conclusion.
At the end, she had a minute to go over the results.
Homework. Read
carbohydrates and proteins, maybe a quiz. Hint, hint!
 |
| Student feedback from other teacher trainees |
Teacher evaluation:
First Self-reflection: she thought that the lecture went well. She had corrected all the mistakes she made last time.
First Self-reflection: she thought that the lecture went well. She had corrected all the mistakes she made last time.
There were other trainees who had been observing the class and they
were also required to give feedback. All the comments were positive.
