Ice inferno – vanilla ice cream

Ice inferno – using experiment with ice cube and salt to prepare vanilla ice cream

Type of resource: You tube channel “cudaczek lab3” – video

Web address https://www.youtube.com/watch?v=9QGwXclQe18

Language: English

Description

Experiment – making freezing mixture with salt and ice cubes, and then using this mixture to produce ice-creams

Scientific concept introduced

Act of freezing, ice, salt, ice cream

Creative and critical thinking

Critical thinking

Mathematical reasoning

Measuring (keeping proportions between ingredients)

Scientific thinking

Cognitivie curiosity

Asking questions

Predicting

Analyzing the results of chemical reaction between salt and ice cubes

Drawing conclusions

Learning how to learn

Independent thinking and acting

Self-confidence and self-reliance

Additional

Enriching voabulary, reading and following instructions

Hand-eye coordination

Teamwork, Following rules of safety and good work organization

https://www.youtube.com/watch?v=9QGwXclQe18

Take a look also at this resource!

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

Ice inferno – using experiment with ice cube and salt to prepare vanilla ice cream

Overall aims

• To build the knowledge of salt characteristics/ features
• To develop the ability to observe the chemical reaction/ phenomena
• To develop the ability to make conclusions based on experiment
• To create the learning opportunity for explaining the concepts of ice, temperature, act of freezing
• To strengthen the research attitude in children

Vocabulary – keywords should be understood

Act of freezing, ice, salt, ice cream

Expected learning outcomes (operational aims)

• To name the features of salt
• To run the experiment
• To observe the results of chemical reaction
• To draw the conclusions from experiment
• To explain the the process of freezing, the concept of temperature

STEM skills – to which the learning unit is related to

CORE STEM SKILLS

• Critical thinking
• Asking questions
• Analyzing the results of chemical reaction between salt and ice cubes
• Drawing conclusions
• Measuring (keeping proportions between ingredients)
• Hand-eye coordination
• Following rules of safety and good work organization

ADDITIONAL SKILLS

–

Teaching methodologies/activity outline

1. Building the problematic situation:
• How to make vanilla ice cream? What do we need for that?:
• Is it possible to make ice cream without a refrigerator? With the use of salt?

2. Formulating predictions – and choosing method to verify hypothesis – propositions from children

3. Preparing materials to run two different experiments: a/ to make ice creams in a traditional way with the use of the freezer; b/ making ice cream with the use of salt and ice cubes in a container
• Take salt, ice cubes, container, hammer, towel, and thermometer
• Crush the ice cubes with hammer (cover ice cubes with towel to avoid the mess) and put the crushed ice into a big container

• Measure the temperature of ice – it should be 0°C
• Add salt – checking the weight proportions 3:1
• Mix the ingredients carefully
• Put the thermometer into the mixture and observe how quickly the temperature is dropping (coming down). If you keep the right proportions of salt and ice the temperature should decline to minus 21°C.. The mixture is really freezing – observe the container – how quickly the white frost is appearing on the container

• Use the experiment to make vanilla ice cream
• You will need ice cubes, fat milk, vanilla aroma, sugar, 2 string plastic bags, and big plastic bottle or another container
• Take 150 ml mleka (half of glass), add 1 spoon of sugar and ½ teaspoon of vanilla fragrance
• Mix the ingredients carefully and wait for the sugar to dissolve
• Crush the ice with hammer and put it into container
• To ice add the salt (keeping the proportions of weight 3:1)
• Pour the milky mixture into 1 plastic bag and close it tightly, then put it into the second plastic bag for the safety
• Put the plastic bad with milky mixture into the container with ice
• For the next 10-15 minutes (at least) shake the container, roll it off and tumble making sure that the milky mixture is in a constant movement and was covered with freezing mixture of ice
• After that time – take off the bag with ice cream

4. Tasting and comparing the 2 types of ice creams – from the freezer and from the container with salt

5. Drawing conclusions and explaining concepts:
• What is the difference between these 2 types of ice creams?
• Where is this difference coming from?
• What are the important features of salt – what was the role of salt in the process of freezing?

Assessment of learning

Children’s conclusions at the last part of class

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

Ice cubes, salt, hammer, towel, thermometer with the scale up to minus 20 degrees, fat milk, vanilla aroma, sugar, 2 string plastic bags, big plastic bottle or any other container

Kind of setting

Preschool room or kitchen

References – source

https://www.youtube.com/watch?v=9QGwXclQe18
Another version of the same experiment can be found in: Jarosław Wasilewski (2016) Eksperymentuj z dzieckiem. 30 niesamowitych eksperymentów dla młodych odkrywców. Wyd. Sierra Madre.