Third Grade, Lesson 3: If the Forest Could Talk

Concept
Insects are essential elements of any ecosystem as they serve as pollinators for plants. Insects may be regarded as a nuisance to humans, but if they all disappeared every ecosystem would feel the impact of this loss.
Essential Question
What if the forest could talk?
Step 1 -- Connect (The Concept to Prior Knowledge)
Challenge
Students identify one of the essential elements from their environment that must be protected in order to maintain the effective balance of the ecosystem. Insects are critical to the survival of many ecosystems.
Materials
- Internet access or insect field guides
- Poster paper
- Art supplies
Procedure
- Students research different pollinating insects that live in their local environment on the Internet or field guide books. For example, bees work to pollinate plants that provide essential botanical species within certain areas. Bees may be necessary for the production of honey or for certain vegetables in gardens.
- Students create posters that describe their insect and show its connection to plants in their area.
- Have students identify how the insects may interact by sharing plants or insuring that a food source is present for another insect.
- Display the posters.
- Remove one of the insects at a time and discuss the impact this might have on the environment, especially on the types of plant and animal life (vegetable gardens and honey producers) that live in the area.
- Identify which plants and animals would have to move to another location or would die as a result of the changes on insect life.
- Discuss what other changes might affect plants and animals that children have identified, for example, changes in rainfall or temperature.
Step 2 -- Literature/Discuss (Give Expert Information Book; Ask Questions)
Challenge
Students find out what changes in the Ecuadorian landscape will impact the productivity of cacao trees.
Materials
- Book: The Story of Chocolate, by DK Publishing
- Paper, pencils
Procedure
- Read aloud: The Story of Chocolate, by DK Publishing
- Read the From the Bean to the Bar: Chocolate Slideshow, available from the Resource Index, to take a delicious journey that follows the production of a chocolate bar from the bean to your supermarket.
- Discuss with students the interaction of different elements in the rainforest environment and how these might impact the growth and productivity of cacao plants.
- Have students research the growth cycle and conditions of the cacao plant.
- Draw a diagram of the cocoa growth cycle and conditions answering the questions: - How much water does a plant need in a year? - What kind of soil is best? - Do plants grow better in shade or in full sun? - What pollinators come to cacao plants? - What is missing from cocoa farms that occur naturally in the forest? - What birds use the cacao plant for shelter or food?
Step 3A -- Practice (Math and Learning Centers)
Challenge
Students calculate the ratio of chocolate to the productivity of cacao plants and their farmers.
Materials
- Research tools (Internet, encyclopedia)
- Paper, pencils
Procedure
Students research how many cocoa beans are produced on one cacao plant.
- Calculate how many beans are necessary for one pound of chocolate.
- Calculate how many cacao plants are necessary to supply the chocolate consumed by one student over a week, a month and a year. (Students will have to keep a record on their chocolate consumption and estimate the weight in pounds.)
- If a cacao plant takes up X amount of room, how big would a field of cacao plants have to be to supply chocolate to your class?
- Estimate how heavy a bag that carries the number of cocoa beans for one pound of chocolate is.
- Figure out how many pounds a worker in a cocoa field would have to carry in order to supply a pound of chocolate for a student.
Step 3B -- Create (Performance Tasks Related to Standard Indicators)
Challenge
Students will understand how their supermarket habits impact the communities of people like the Chachi in Ecuador.
Materials
- Art supplies
- Paper
Procedure
- Students will create a mock store that sells chocolate of different kinds.
- Each student in the class will design a package for their chocolate product that shows the amount/weight of the chocolate and lists all the "ingredients" necessary to grow chocolate, or cocoa beans. For example: What insects are necessary, how much rainfall, how much land is required for the number of plants to produce the right amount of beans, etc.
- Each label will be illustrated with a picture that shows (either with a map or a drawing) where the cacao plant grows and how it is related to the rainforest in Ghana.
- Students will draw posters for their "store" that advertise shade grown versus full sun/plantation cocoa and list at the bottom the benefits and problems with each approach to farming.
Step 4 -- Present (Edit Work/Students Present Projects)
Challenge
Students have a mock open house for their store and advertise their 'products' to other students.
Materials
- Chocolate labels from Step 3B
Procedure
- Students organize their packaging by setting up a mock chocolate store for other students to visit.
- Students write and present commercials/advertisements for their products that they present orally/dramatically in front of the class.
The Rainforest Alliance curriculum is unique in that it teaches science, math, language arts and social studies essentials while addressing the United States National Standards for Learning. These are the standards addressed in the third grade lessons.
Language Arts Writing
Standard 4 Level 2 Grade 3 - 5
2. 3. 4. Gathers and uses information for research purposes (encyclopedias, dictionaries, electronic media).
Uses multiple representations of information (maps, charts, diagrams, tables) to find information for research topics.
7. Uses strategies to compile information into written reports or summaries.
Reading
Standard 7 Level 2 Grade 3 - 5
Uses reading skills and strategies to understand a variety of informational texts.
5. Summarizes and paraphrases information in texts.
6. Uses prior knowledge and experience to understand and respond to new information.
Standard 6 Level 2 Grade 3 - 5
Uses reading skills and strategies to understand and interpret a variety of literacy texts.
9. Makes connections between characters or simple events in a literary work and people or events in his or her own life.
Listening and Speaking
Standard 8 Level 2 Grade 3 - 5
Contributes to group discussions.
Asks questions in class.
Responds to questions and comments.
1. Listens to classmates and adults.
7. Makes basic oral presentations to class.
10. Organizes ideas for oral presentations.
Thinking and Reasoning
Standard 3 Level 2 Grade 3 - 5
4. Makes comparisons between countries in terms of relatively concrete characteristics (size, population and products).
Standard 1 Level 2 Grade 3 - 5
1. Uses facts from books, articles and databases to support an argument.
7. Recognizes when a comparison is not fair because important characteristics are not the same.
Standard 5 Level 2 Grade 3 - 5
1. Identifies issues and problems in the school or community that one might help solve.
Mathematics
Standard 1 Level 2 Grade 3 - 5
1. Uses a variety of strategies to understand problem situations.
2. Represents problems situations in a variety of forms.
Standard 3 Level 2 Grade 3 - 5
7. Solves real world problems involving number operations.
Standard 4 Level 2 Grade 3 - 5
1. Understands the basic measures perimeter, area, volume circumference.
2. Selects and uses appropriate tools for given measurement situations.
4. Understands relationships between measures.
1. Uses specific strategies to estimate quantities and measurements.
Standard 9 Level 2 Grade 3 - 5
2. Understands that mathematical ideas and concepts can be represented concretely, graphically, and symbolically.
Life Sciences
Standard 6 Level 2 Grade 3 - 5
1. Knows the organization of simple food chains and food webs.
2. Knows the transfer of energy.
3. Knows that changes in the environment can have different effects on different organisms.
4. Knows that all organisms (including humans) cause changes in their environments and these changes can be beneficial or detrimental.
Standard 1 Level 2 Grade 3 - 5
Understands atmospheric processes and the water cycle.
Standard 4 Level 2 Grade 3 - 5
5. Knows that the characteristics of an organism can be described in terms of a combination of traits; some traits are inherited and others result from interactions with the environment.
Standard 5 Level 2 Grade 3 - 5
3. Knows that living organisms have distinct structures and body systems that serve specific functions in growth, survival and reproduction. (body structures for walking, flying, or swimming).
Standard 7 Level 2 Grade 3 - 5
3. Understands the concept of extinction and its importance in biological evolution.
4. Knows ways in which living things can be classified.
Standard 9 Level 2 Grade 3 - 5
Understands the sources and properties of energy.
Standard 11 Level 2 Grade 3 - 5
5. Knows that good scientific explanations are based on evidence (observations) and scientific knowledge.
6. Knows that scientists make the results of their investigations public.
Standard 13 Level 2 Grade 3 - 5
1. Knows that people of all ages, backgrounds and groups have made contributions to science and technology throughout history.
Standard 12 Level 2 Grade 3 - 5
3. Plans and conducts simple investigations.
4. Uses appropriate tools and simple equipment.
Third Grade Resources
- Third Grade Curriculum
- Ghana Slideshow [PDF]
- Ghana Slideshow script [PDF]
- Chocolate Slideshow [PDF]
- Romel's Rainforest Home [PDF]
- El Hogar de Romel en el Bosque Tropical [PDF]
- Romel e seu Lar na Floresta [PDF]
Species Profiles
- African Elephant [PDF]
- African Grey Parrot [PDF]
- Black-headed Paradise Flycatcher [PDF]
- Cacao Tree
- Western Red Colobus [PDF]
Rainforest Posters
- Inside the Canopy [PDF] – Structure and species of the rainforest
- Status Report [PDF] – What is happening to the rainforest
Terrarium Instructions [PDF]
Teacher summary [PDF] – The Rainforest Alliance Learning Site provides a downloadable overview of cocoa farmers in Ghana with useful information to introduce you to the lesson topic.
Certificate of Accomplishment [PDF]