1-3 hours
Ages 5+
What Will You Make?
If you shake cream and ice long enough, it turns into ice cream. Sweet! But just how much shaking, and for how long?
What Will You Learn?
You’ll learn to use salt to lower the freezing point of water and how to get the creamiest ice cream by making an emulsion.
Mix Your Ingredients
Step 1
Pour ¼ cup milk, ¼ cup heavy cream, 1 Tbsp sugar, and ¼ tsp vanilla into a quart zip-top freezer bag. Seal the quart bag.
Step 2
Now place your ice cream bag into a gallon zip-top freezer bag with 4 cups of ice and 4 Tbsp of salt. Seal the gallon bag with everything inside.
Step 3
Set aside this first bag of ingredients and ice, and prepare two more the same way.
Whole Lotta Shakin'
Step 1
Once prepared, gently shake the second bag for 10 minutes.
Shake the third bag vigorously for 10 minutes.
Don’t shake the first one at all.
Step 2
Pour or scoop out the contents of the three bags and compare the results.
Fast and Slow
Step 1
How did your shaking affect the overall completeness (how frozen it is) and smoothness of your ice cream? Which technique created the smoothest ice cream?
What Is Happening Here?
What Makes Ice Cream Creamy?
This ice cream is made of sugar, fat, ice crystals, and air. Ice cream’s creaminess depends on the size of the ice crystals that form during freezing — the more you shake, the smaller the ice crystals become and the more air is incorporated into the ice cream. Doing both makes for a creamier cream!
Why Does Shaking Some Dairy in a Bag Make Ice Cream?
Ice cream is an emulsion, which means small droplets of one liquid dispersed or spread throughout another. Think salad dressing: Oil and vinegar don’t dissolve, but they can disperse into an emulsion with the help of a whisk. When you shake the bag, it emulsifies the ice cream, dispersing the ice crystals, fat molecules, and air.
Why salt? Salt lowers the melting temperature of the ice; the colder the icy solution around the ice cream, the faster the cream freezes.
What Is Next?
More Frozen Treats
Are you dairy free? Try a refreshing Cranberry Pomegranate Sorbet instead? Or learn to make ice cream with liquid nitrogen!
MATERIALS
- Quart zip-top freezer bags
- Gallon zip-top freezer bags
- Milk, ¼ cup
- Heavy cream, ¼ cup
- Sugar, 1 Tbsp
- Vanilla, ¼ tsp
- Ice, 4 cups
- Salt, 4 Tbsp
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Arts & Crafts Science STEM or STEAMSee More Projects from these themes:
Art/Craft Studio Carnival/Theme Park The Canteen (Mess Hall and Recycling Station)Maker Camp
Maker Camp Project Standards
Based on NGSS (Next Generation Science Standards)
National Core Arts Standards
The National Core Arts Standards are a process that guides educators in providing a unified quality arts education for students in Pre-K through high school. These standards provide goals for Dance, Media Arts, Music, Theatre, and Visual Arts with cross-cutting anchors in Creating, Performing, Responding, and Connecting through art. The Anchor Standards include:- Generate and conceptualize artistic ideas and work.
- Organize and develop artistic ideas and work.
- Refine and complete artistic work.
- Select, analyze, and interpret artistic work for presentation.
- Develop and refine artistic techniques and work for presentation.
- Convey meaning through the presentation of artistic work.
- Perceive and analyze artistic work.
- Interpret intent and meaning in artistic work.
- Apply criteria to evaluate artistic work.
- Synthesize and relate knowledge and personal experiences to make art.
- Relate artistic ideas and works with societal, cultural, and historical context to deepen understanding.
CCSS (Common Core State Standards)
The Common Core is a set of high-quality academic standards in mathematics and English language arts/literacy (ELA).English Language Arts Standards » Science & Technical Subjects
- Middle School
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- CCSS.ELA-LITERACY.RST.6-8.1 Cite specific textual evidence to support analysis of science and technical texts.
- CCSS.ELA-LITERACY.RST.6-8.3 Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks.
- CCSS.ELA-LITERACY.RST.6-8.4 Determine the meaning of symbols, key terms, and other domain-specific words and phrases as they are used in a specific scientific or technical context relevant to grades 6-8 texts and topics.
- CCSS.ELA-LITERACY.RST.6-8.5 Analyze the structure an author uses to organize a text, including how the major sections contribute to the whole and to an understanding of the topic.
- CCSS.ELA-LITERACY.RST.6-8.6 Analyze the author's purpose in providing an explanation, describing a procedure, or discussing an experiment in a text.
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- High School
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- CCSS.ELA-LITERACY.RST.9-10.1 Cite specific textual evidence to support analysis of science and technical texts, attending to the precise details of explanations or descriptions.
- CCSS.ELA-LITERACY.RST.9-10.3 Follow precisely a complex multistep procedure when carrying out experiments, taking measurements, or performing technical tasks, attending to special cases or exceptions defined in the text.
- CCSS.ELA-LITERACY.RST.9-10.4 Determine the meaning of symbols, key terms, and other domain-specific words and phrases as they are used in a specific scientific or technical context relevant to grades 9-10 texts and topics.
- CCSS.ELA-LITERACY.RST.9-10.5 Analyze the structure of the relationships among concepts in a text, including relationships among key terms (e.g., force, friction, reaction force, energy).
- CCSS.ELA-LITERACY.RST.9-10.6 Analyze the author's purpose in providing an explanation, describing a procedure, or discussing an experiment in a text, defining the question the author seeks to address.
- CCSS.ELA-LITERACY.RST.11-12.1 Cite specific textual evidence to support analysis of science and technical texts, attending to important distinctions the author makes and to any gaps or inconsistencies in the account.
- CCSS.ELA-LITERACY.RST.11-12.3 Follow precisely a complex multistep procedure when carrying out experiments, taking measurements, or performing technical tasks; analyze the specific results based on explanations in the text.
- CCSS.ELA-LITERACY.RST.11-12.4 Determine the meaning of symbols, key terms, and other domain-specific words and phrases as they are used in a specific scientific or technical context relevant to grades 11-12 texts and topics.
- CCSS.ELA-LITERACY.RST.11-12.5 Analyze how the text structures information or ideas into categories or hierarchies, demonstrating understanding of the information or ideas.
- CCSS.ELA-LITERACY.RST.11-12.6 Analyze the author's purpose in providing an explanation, describing a procedure, or discussing an experiment in a text, identifying important issues that remain unresolved.
ISTE Standards (International Society for Technology in Education)
The ISTE Standards provide the competencies for learning, teaching and leading in the digital age, providing a comprehensive roadmap for the effective use of technology in schools worldwide.1.1 Empowered Learner
- Summary: Students leverage technology to take an active role in choosing, achieving, and demonstrating competency in their learning goals, informed by the learning sciences.
- 1.1.a Students articulate and set personal learning goals, develop strategies leveraging technology to achieve them and reflect on the learning process itself to improve learning outcomes.
- 1.1.b Students build networks and customize their learning environments in ways that support the learning process.
- 1.1.c Students use technology to seek feedback that informs and improves their practice and to demonstrate their learning in a variety of ways.
- 1.1.d Students understand the fundamental concepts of technology operations, demonstrate the ability to choose, use and troubleshoot current technologies and are able to transfer their knowledge to explore emerging technologies.
1.2 Digital Citizen
- Summary: Students recognize the rights, responsibilities and opportunities of living, learning and working in an interconnected digital world, and they act and model in ways that are safe, legal and ethical.
- 1.2.a Students cultivate and manage their digital identity and reputation and are aware of the permanence of their actions in the digital world.
- 1.2.b Students engage in positive, safe, legal and ethical behavior when using technology, including social interactions online or when using networked devices.
- 1.2.c Students demonstrate an understanding of and respect for the rights and obligations of using and sharing intellectual property.
- 1.2.d Students manage their personal data to maintain digital privacy and security and are aware of data-collection technology used to track their navigation online.
1.3 Knowledge Constructor
- Summary: Students critically curate a variety of resources using digital tools to construct knowledge, produce creative artifacts and make meaningful learning experiences for themselves and others.
- 1.3.a Students plan and employ effective research strategies to locate information and other resources for their intellectual or creative pursuits.
- 1.3.b Students evaluate the accuracy, perspective, credibility and relevance of information, media, data or other resources.
- 1.3.c Students curate information from digital resources using a variety of tools and methods to create collections of artifacts that demonstrate meaningful connections or conclusions.
- 1.3.d Students build knowledge by actively exploring real-world issues and problems, developing ideas and theories and pursuing answers and solutions.
1.4 Innovative Designer
- Summary: Students use a variety of technologies within a design process to identify and solve problems by creating new, useful or imaginative solutions.
- 1.4.a Students know and use a deliberate design process for generating ideas, testing theories, creating innovative artifacts or solving authentic problems.
- 1.4.b Students select and use digital tools to plan and manage a design process that considers design constraints and calculated risks.
- 1.4.c Students develop, test and refine prototypes as part of a cyclical design process.
- 1.4.d Students exhibit a tolerance for ambiguity, perseverance and the capacity to work with open-ended problems.
1.5 Computational Thinker
- Summary: Students develop and employ strategies for understanding and solving problems in ways that leverage the power of technological methods to develop and test solutions.
- 1.5.a Students formulate problem definitions suited for technology-assisted methods such as data analysis, abstract models and algorithmic thinking in exploring and finding solutions.
- 1.5.b Students collect data or identify relevant data sets, use digital tools to analyze them, and represent data in various ways to facilitate problem-solving and decision-making.
- 1.5.c Students break problems into component parts, extract key information, and develop descriptive models to understand complex systems or facilitate problem-solving.
- 1.5.d Students understand how automation works and use algorithmic thinking to develop a sequence of steps to create and test automated solutions.
NGSS MS.Engineering Design
The Next Generation Science Standards (NGSS) are K–12 science content standards.- MS-ETS1-1. Define the criteria and constraints of a design problem with sufficient precision to ensure a successful solution, taking into account relevant scientific principles and potential impacts on people and the natural environment that may limit possible solutions.
- MS-ETS1-2. Evaluate competing design solutions using a systematic process to determine how well they meet the criteria and constraints of the problem.
- MS-ETS1-3. Analyze data from tests to determine similarities and differences among several design solutions to identify the best characteristics of each that can be combined into a new solution to better meet the criteria for success.
- MS-ETS1-4. Develop a model to generate data for iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved.
NGSS HS.Engineering Design
The Next Generation Science Standards (NGSS) are K–12 science content standards.- HS-ETS1-1. Analyze a major global challenge to specify qualitative and quantitative criteria and constraints for solutions that account for societal needs and wants.
- HS-ETS1-2. Design a solution to a complex real-world problem by breaking it down into smaller, more manageable problems that can be solved through engineering.
- HS-ETS1-3. Evaluate a solution to a complex real-world problem based on prioritized criteria and trade-offs that account for a range of constraints, including cost, safety, reliability, and aesthetics as well as possible social, cultural, and environmental impacts.
- HS-ETS1-4. Use a computer simulation to model the impact of proposed solutions to a complex real-world problem with numerous criteria and constraints on interactions within and between systems relevant to the problem.
NGSS K-2 Engineering Design
The Next Generation Science Standards (NGSS) are K–12 science content standards.- K-2-ETS1-1. Ask questions, make observations, and gather information about a situation people want to change to define a simple problem that can be solved through the development of a new or improved object or tool.
- K-2-ETS1-2. Develop a simple sketch, drawing, or physical model to illustrate how the shape of an object helps it function as needed to solve a given problem.
- K-2-ETS1-3. Analyze data from tests of two objects designed to solve the same problem to compare the strengths and weaknesses of how each performs.
NGSS 3-5.Engineering Design
The Next Generation Science Standards (NGSS) are K–12 science content standards.- 3-5-ETS1-1. Define a simple design problem reflecting a need or a want that includes specified criteria for success and constraints on materials, time, or cost.
- 3-5-ETS1-2. Generate and compare multiple possible solutions to a problem based on how well each is likely to meet the criteria and constraints of the problem.
- 3-5-ETS1-3. Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved.