educ 416 osmosis activity

Teed-WorldFood Inspection

Agency

Welcome New Food Inspectors• You job is:– To ensure the quality of new food in our society– To ensure the safety of new food in our society– To ensure that we have food in our fridges

• The Food Inspector Oath:

I, a TeedWorld Food Inspector, solemly pledge to protect and

preserve the public when it comes to food! Yum Yum!

Teed-WorldFood Inspection

Agency

The situation

• Iron Chef Teed-World has had problems with their food recently.

• We are to get to the bottom of the situation and determine the cause of the problems they are having – WHAT’S WRONG WITH THE FOOD

• Lets’s recap what happened last week on the Iron Chef…

LAST WEEK ON THE IRON CHEF…

Your Tasks

• Find your station (using the coloured square) and inspect the food according to the worksheet provided in three minutes.

• One worksheet per group of four.• Then, we will rotate you around to the next

station.• DO NOT LOSE YOUR COLOURED SQUARE

Some New Information!

• About water movement?

• Take two minutes to revisit any of the stations that you need to re-inspect the foods if necessary.

• Present your findings to the larger group.

Teed-WorldFood Inspection

Agency

Where does Osmosis fit in the PLOs and Extension Questions

• Science 8 (Cell Unit) and Biology 12 (Intro Cell)• Extension Questions– Why do grocery stores spray their fresh produce with

water?– If a bowl of strawberries is sprinkled with sugar, a few

minutes later the will be covered in juice. Explain why this happens.

– If a potato was in 4 different beakers at different temperatures (5°C, 20°C, 25°C, 35°C). Which will be the heaviest after 30 minutes.

– If a shipwrecked crew drank salt water, they could die. Explain why.

More Extension Questions

– The student can design their own experiments. These can be done at home.

– Link to the Egg Osmosis that you saw today:• http://www.sunnyside.fresno.k12.ca.us/staff/

msaltschuler/documents/EggandOsmosis.pdf

Osmosis Dance

• Let’s do the dance!

Teed-WorldFood Inspection

Agency