How to inflate a balloon with yeast

How to inflate a balloon with yeast

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Short description
Full description
Evaluation
Short description

How to inflate a balloon with yeast? Investigating the properties of yeast

Type of resource:  video You Tube

Web address Adres internetowy - https://www.youtube.com/watch?v=nqnvNdU-wyE
https://www.youtube.com/watch?v=9Lxl-SQh9kk

Language: Polish, English

Description

Experiments - using yeast to inflate a balloon. Testing how yeast works in different environment, mixed with differetn substances.

Scientific concept introduced

Yeast, unicellular fungi, sugar fermentation, carbon dioxide, temperature

Creative and critical thinking

Creative thinking: designing new experiments

Mathematical reasoning

measuring substances, comparing, classifying, measuring time

Scientific thinking

formulating problems, predicting, verifying hypotheses, observing chemical reactions, drawing conclusions

Learning how to learn

motivation to learn, emotional involvement, positive self-image as a learner

Additional

A/ Oral language development - Communicating, Wzbogacanie słownictwa;

B/ Teamwork;

C/ Hand-eye coordination, fine motor skills - precision in movement.

Full description

How to inflate a balloon with yeast? Investigating the properties of yeast

Overall aims

• Understanding the nutritional properties of yeast
• Defining the concept of sugar fermentation by experimenting with yeast - using yeast for baking bread
• Developing the ability to observe and draw conclusions

Vocabulary - keywords should be understood

Yeast, unicellular fungi, sugar fermentation, carbon dioxide, temperature

Expected learning outcomes (operational aims)

The child:
• describes the fermentation process.
• observes the course of the experiment
• experiments with yeast in different situations

STEM skills - to which the learning unit is related to

CORE STEM SKILLS

Scientific thinking:
formulating problems, predicting, verifying hypotheses, observing chemical reactions, drawing conclusions

 

Mathematical reasoning:
measuring substances, comparing, classifying

 

Learning to learn:
motivation to learn, emotional involvement, positive self-image as a learner

ADDITIONAL SKILLS

Communicating;
Teamwork
Hand-eye coordination, Fine motor skills - precision in movement

Teaching methodologies/activity outline

1. Creating a problem situation
Ask the children to investigate the yeast with senses: watch it, smell it, taste it. Discuss: What is yeast used for? What is yeast? (you can prepare 2 different kinds of bread for comparing the taste: yeast bread and bread without yeast). Compare the taste and describe it.

 

2. Problem question: What to do to inflate the balloon using yeast?

 

3. Formulating hypotheses: note the children's predictions

 

4. Verification of hypotheses
Conducting the experiment: children work in small teams.
Ask the children to prepare two bottles of different sizes. Pour a little warm water into each one, add yeast (about 0.5 grams), a teaspoon of sugar. Shake the bottles clogging the opening. Put one balloon on both bottles and observe - What do you think will happen? Children can use the stopwatch to measure the time.

 

5. Drawing conclusions – introducing the concepts: fermentation, yeast.

 

6. Additional activities related to children's questions about the conditions that will allow the balloon to be inflated and further experimenting

• Will the balloons be filled if we mix yeast with salt and flour instead of sugar?

• Will the balloons be filled if we use cold water? How much time is needed for that?

• How much yeast do we need to fill a balloon using bottles of different sizes?

• How long will the balloon need to inflate if we place it on a small bottle and a large one?

You can bake yeast bread with your children.

Assessment of learning

Suggested questions:

What is need to inflate a ballon?
What conditions are necessary to initiate the yeast fermentation process?

Equipment and materials to be used in learning unit (tools, ingredients etc)

For each team: 2 bottles of different sizes; 2 balloons, a teaspoon, a tablespoon, yeast, sugar, warm water.

Kind of setting

classroom

References - source

https://www.youtube.com/watch?v=nqnvNdU-wyE

https://www.youtube.com/watch?v=9Lxl-SQh9kk

Polish version: http://kitchenlab4kids.eu/?p=2557

Evaluation

How to inflate a balloon with yeast? Investigating the properties of yeast

1. Usefulness for STEM education - integrating content of different disciplines

Cross-curricular character of the resource 

 

The range of S-T-E-M subjects included 

 

The presentation of possibilities of including artistic activities (STEAM approach)

 

2. Expected learning outcomes

Consistency (links) with preschool core curriculum

 

Communicativeness of description

 

3. Methodology of teaching

Clarity, communicativeness of instructions for teachers

 

Meaningful learning - using practical life problems

 

Original idea 

 

The level of ease in implementing the methodology to preschool age children

 

The level of ease in preparing necessary ingredients, materials and equipment needed

 

4. Sustainability

Ecological characteristics of materials/ results

 

Supporting healthy eating habits 

 

Low ecological footprint

 

Possibilities of inclusion (respecting cultural diversity and food intolerances)

 

5. Class management

Using differentiated forms of work - individual, team work etc.

 

Individual work

 

 

 

 

Team work

 

 

 

 

Whole group

 

 

 

6. Time management

 

Short activity (10-15 minutes)

 

 

 

Medium activity (20-30 minutes)

 

 

 

Long activity (1 hour or more)

 

 

 

Very long activity (1 day or more)

 


Take a look also at this resource!

It has a very similar methodology, but a slightly different approach.

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