1.1 Sight, hearing and touch

Learning objective:

Description of the visual, sound and tactile characteristics of food.

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8

Activity : who am I in your eyes ?

Source : Alimentarium | 8-10 ans

Guess which food is being described from the following visual description.

 

  1. My flesh is quite firm. I am crisp and crunchy. I can be red, yellow or green. I can be cut into quarters or puréed.
  2. I am black and a liquid. People drink me when I am hot.
  3. I am white and soft. I am made by curdling soya milk. I come in the form of small cubes.
  4. I am green. I am soaked in vinegar. I am shaped like a banana, but I’m smaller than a banana.
  5. I am orange, hard and long. I grow in the ground. You can eat me in sticks, sliced or mashed.
  6. I can be brown or white. You can eat me in solid or liquid form. I am used in lots of puddings.
  7. I am a clear liquid. I am essential for life.
  8. I am small, green and round. I grow inside a pod.
  9. I am rectangular, long and yellow. You cook me in oil and I am made from potatoes.
  10. I am white or light brown on the outside and white and yellow inside.  I am oval shaped. You can eat me scrambled, poached, hard boiled, soft boiled or fried.

 

Answer: 1 - an apple, 2 - coffee, 3 - tofu, 4 - a gherkin, 5 - a carrot, 6 - chocolate, 7 - water, 8 - a pea, 9 - a chip, 10 - an egg.

 

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Activity: the Ishihara Test

Source : Alimentarium | 8-10 ans

In 1917, Doctor Shinobu Ishihara invented a test to detect colour blindness.

 

Can you work out the numbers on the following plates?

 

    

    

 

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Activity : what do you hear ? what am I ?

Source : Alimentarium | 8-10 ans

Guess the food from the following sounds.

 

  1. eating a biscuit
  2. eating an apple loudly
  3. person chewing bubble gum – 0:15
  4. eating cereal
  5. person chewing popcorn

 

Answer : 1 - A biscuit, 2 - An apple, 3 - Chewing gum, 4 - Cereal, 5 - Popcorn.

 

It's not easy to recognise food from what it sounds like. When you eat something, your hearing plays a limited role compared to your other senses.

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Activity : what does it feel like ?

Source : Alimentarium | 8-10 ans

Give an example of food for each of the following characteristics you can feel in your mouth.

 

Crunchy: _______________________________________________________________________

Crispy: _________________________________________________________________________

Sticky: _________________________________________________________________________

Stretchy: _______________________________________________________________________

Thick: __________________________________________________________________________

Rough: _________________________________________________________________________

Dense: _________________________________________________________________________

Crumbly: _______________________________________________________________________

Sandy: _________________________________________________________________________

Puffy: __________________________________________________________________________

 

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5

Activity : who am I in your eyes ?

Source : Alimentarium | 11-13 ans

Guess which food is being described from the following visual description.

 

  1. My flesh is quite firm. I am crisp and crunchy. I can be red, yellow or green. I can be cut into quarters or puréed.
  2. I am black and a liquid. People drink me when I am hot.
  3. I am white and soft. I am made by curdling soya milk. I come in the form of small cubes.
  4. I am green. I am soaked in vinegar. I am shaped like a banana, but I’m smaller than a banana.
  5. I am orange, hard and long. I grow in the ground. You can eat me in sticks, sliced or mashed.
  6. I can be brown or white. You can eat me in solid or liquid form. I am used in lots of puddings.
  7. I am a clear liquid. I am essential for life.
  8. I am small, green and round. I grow inside a pod.
  9. I am rectangular, long and yellow. You cook me in oil and I am made from potatoes.
  10. I am white or light brown on the outside and white and yellow inside.  I am oval shaped. You can eat me scrambled, poached, hard boiled, soft boiled or fried.

 

Answer: 1 - an apple, 2 - coffee, 3 - tofu, 4 - a gherkin, 5 - a carrot, 6 - chocolate, 7 - water, 8 - a pea, 9 - a chip, 10 - an egg.

 

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5

Activity : what do you hear ? What am I ?

Source : Alimentarium | 11-13 ans

Guess the food from the following sounds.

 

  1. eating a biscuit
  2. eating an apple loudly
  3. person chewing bubble gum – 0:15
  4. eating cereal
  5. person chewing popcorn

 

Answer : 1 - A biscuit, 2 - An apple, 3 - Chewing gum, 4 - Cereal, 5 - Popcorn.

 

It's not easy to recognise food from what it sounds like. When you eat something, your hearing plays a limited role compared to your other senses.

 

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5

Activity : touch receptors

Source : Alimentarium | 11-13 ans

Instructions :

Ask someone to hold out their arm and close their eyes.

Hold two pens (top facing down) on one of their fingertips.

How many pen tops do they feel?

 

While they keep their eyes closed, hold the two pens (beside each other) on the person's forearm.

How many pen tops do they feel?

 

Explanation:

Your fingertips are very sensitive, as they contain lots of mechanoreceptors. Your forearm is less sensitive as the nerve network is less dense here, which explains why you need to separate the pen lids out in order to feel them separately.

 

Studies of our hands demonstrate that our fingertips can distinguish 2 points only 2 mm apart. On the palm this distance is 5 - 10 mm and on your forearm you need a gap of at least 40 mm to be able to distinguish between 2 points.

 

 

Note: The spatial discrimination threshold is evaluated by the minimum gap needed between the two dry points of a compass for them to be perceived as distinct from each other.  It varies according to the part of the body being stimulated.