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Natural Selection Prey and Predator

This post includes a link to a model that can be used with the OpenSciEd Bacteria Food Hunt Unit net logo simulation.

Desert Cottontail against tan background - wikimedia

Natural Selection Programming

A lesson for middle school science that uses a variation of the rabbits and grass program to explore concepts of natural selection.

Pond Ecosystem Biograph project

Ecosystems are made up of interacting, interdependent parts, which are always interacting with and changing each other. Healthy ecosystems are long-lasting. In a long-lasting ecosystem the number of plants and animals may increase and decrease over time, but there are always enough individuals to reproduce and establish the next generation. In this Biograph Virtual Lab your challenge is to build a model of a long-lasting, healthy pond ecosystem using Toolblox programming blocks.

Image of evolution from thenounproject.com

Evolution Curriculum from BioGraph

Evolution is a change in genetic information in a population that is observed over many generations, due to the random chance survival and reproduction of particular individuals. In this BioGraph Virtual Lab, you will observe how a population of fish in a pond changes over time. By the end of this activity, you will understand how random factors (genetic drift) and non-random factors (natural selection) contribute to evolution.

Enzymes: Chew on This!

Carbohydrates in food are an important source of energy for the body. When you eat starch, it must be broken down into simple sugars before your body can use it for energy. In this Biograph Virtual Lab you will use a simulation to explore the breaking down of starch into sugar. The simulation will enable you to compare and contrast the conversion of starch to sugar both with and without enzymes. This will help you understand the role of enzymes in digestion.

Gene Regulation and Protein Synthesis

Every cell in your body has a full set of genes, or ‘recipes,’ to build many different kinds of proteins (including enzymes). What causes a gene to go from its normal ‘turned off’ state (when it IS NOT building proteins) to its ‘turned on’ state (when it IS building proteins)? To answer this question, we will zoom in and take a closer look at a gene and its environment to see how and why a specific protein is made.

Image of sugar moving into bloodstream from MIT Biograph materials

Sugar Transport Activity

Have you ever drank a can of soda and suddenly felt more energetic? In this Biograph Virtual Lab, you will use a simulation to explore how the glucose molecules from the soda move from the lumen of your small intestine, across the membranes of your epithelial cells, and into your bloodstream. (Ultimately, the glucose in your bloodstream will move into your body’s cells).

Traffic Unit for StarLogo Nova

This unit engages students in the use of agent-based modeling to look into why we have traffic jams and test ideas to try to improve traffic flow, and demonstrates the use of simulation to solve difficult engineering problems. Specifically we focus on the problem of traffic bottleneck congestion. A secondary goal is to further students’ understanding of the network concept as a way to model real world flows of data and matter.

Urban street covered with litter, from Project GUTS powerpoint

Littering Unit

Littering is a type of non-point source pollution caused  by humans acting independently from each other, however causing a global environmental problem. Controlling this source of pollution is hard to manage despite numerous interventions. Pollution of groundwater, rivers, oceans result from these everyday littering behavior whether intentional or accidental. In this unit we will model a simple form of littering and then ways to reduce it in our community.

Photo of Love Parade stampede in Germany, 2010, from www.telegraph.co.uk

Emergency Egress

Emergency Egress is the study of people exiting a building or other social gathering space in an emergency situation. This unit explores models and other ways to analyze the safety of a building and to evaluate which elements may affect how quickly and safely a space may be evacuated. It also discusses the issues of modeling humans in emergency situations.

Painting, "Children's Games" by Pieter Bruegel the Elder

Shared Resources - Economics

As the human population grows, it has become increasingly important to understand how humans are impacting the environment and how resources are managed and used. Often, this type of understanding falls under the topic of Sustainability in which the needs of the present population are met without compromising the needs of future generations. In this unit, we look at a variety of resources, through the lens of complex adaptive systems, especially studying feedback and interdependence.

CS in Science Curriculum (binder) compatible with StarLogo Nova 2.0

This is the pdf of the complete CS in Science curriculum. Print copies can be ordered from Mimeo.

Cover page for CS in Science Module 3 Instructor's Manual

CS in Science Module 3: Ecosystems as Complex Systems (for StarLogo Nova 2.0)

This Life Science module begins with an exploration of a simple predator-prey model to consider who eats whom—and what happens when one population grows faster than another. Students develop their own model of a local ecosystem and learn about ecosystem dynamics, producers and consumers, and interdependent relationships within an ecosystem. This module has been updated for StarLogo Nova 2.0 (HTML5/JavaScript version, updated 2017).

Sample rubric for ecosystem module

This rubric was previously posted on the Code.org site and many teachers have found it to be helpful. You can save a copy and modify as fits your curriculum.

Module 3 Lesson 3 - Adding a Predator

In this lesson, students will modify the Rabbits and Grass model by adding a predator, a Mountain Lion, to answer a new question: “Does adding a top predator increase or decrease the stability of an ecosystem?” In the second activity, students will design and run experiments to see if adding a predator has an impact on the ecosystem. This activity will reinforce the concepts of energy flow through ecosystems and the often unexpected results of interactions in complex adaptive systems.

Module 3 Lesson 4 - Create Your Own Ecosystem Model

In this lesson, students will design their own ecosystems projects consisting of a question, experimental design and model. In the first activity, students will learn about the computational science cycle and use it to scope their project. This leads to a second activity where they start designing and implementing their model.

Module 3 Lesson 5 - Designing and Running an Experiment and Sharing Your Findings

In this lesson, students will complete their ecosystems models and then design and run experiments using their models as experimental test beds. As an extension, students can prepare a presentation on their model, experimental design and findings.

Decode NYC Models

In the NSF-funded DecodeNYC program at the American Museum of Natural History, middle school students use the agent-based game and simulation programming environment StarLogo Nova to use, modify, decode, and create scientific models to test different strategies for fighting Lyme disease and answer questions about their urban ecosystem.

DECODE NYC Virtual Lesson Plan - MODIFYING A MODEL: OMNIVOROUS FOXES

This remote lesson serves as an opportunity for students to modify the code of an agent-based model to reflect the complexity of real-world food webs. Students will evaluate theeffectiveness of the modifications based on their understanding of population dynamics.

Screen shot from Parable of the Polygons website

Segregation Model

This model shows how a small preference for looking like one's neighbors can lead to a segregated society. The unit so far includes the model as a mystery model to be discussed and decoded by students, a partial piece of code with to use for decoding practice, a finished model, some background information, and a link to an on-line resource demonstrating these concepts. We are developing an off-line activity and other curriculum for this module -- stay tuned!

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