Marine'Food'Webs:'' Small'Matters!' - Sites@DukeFood'Webs:'' Small'Matters!' ' Objectives'...

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Marine Food Webs: Small Matters! Objectives Students will (1) identify the major components of marine food webs, including phytoplankton and zooplankton, (2) compare marine food webs to terrestrial food webs, (3) work collaboratively to classify marine species, and (4) develop hypotheses regarding the contribution of phytoplankton to global photosynthesis rates. Method Students are assigned a “role” in the marine food web. Students then work collaboratively to sort themselves into a working food web and compare the structure of their food web to that of terrestrial habitats. Materials Instructors should have a blackboard and/or PowerPoint capabilities. Instructors will provide students with “role” cards as well as marine species cards for sorting. Students will need pens/pencils, paper, scissors, and glue. Background Students at the 5 th I6 th grade level are taught to identify, classify, and sort organisms in the environment. Additionally, important learning objectives for 5 th I6 th graders include describing food web interactions between different classes of organisms, as well as identifying plantIbased photosynthesis as the base of this food chain. However, students are often only exposed to terrestrialIbased food webs. This exercise teaches students how food webs work in the marine environment. This is important for understanding global photosynthesis rates since phytoplankton produce 50% of the world’s oxygen. Lesson Activity 1. Start the class with the question, “How does the ocean food web work?” Allow your students to offer suggestions and categorize their ideas as a “circle brainstorm,” (or a “cluster diagram,” see http://writing2.richmond.edu/wri ting/wweb/cluster.html) on the board. Leave your brainstorm up on one portion of the board throughout the class. You will come back to this brainstorm at the end and revise it based on what the students have learned. 2. Pass out marine food web “role” cards to the students (see Appendix 1). The cards should be passed out in the ratio of 1 sun: 4 phytoplankton: 2 zooplankton: 1 fish. Then ask the students to sort Grade Level: 5I6 Subject Areas: Environmental Science Duration: One class session (~45 mins) Group Size: 8 people per group Setting: Indoors Key Terms: marine ecosystems, food webs, phytoplankton, photosynthesis Appendices: Marine Ecosystem Role Cards, Marine Species Worksheet, Example Exam, Feedback Form Author: Alyse Larkin, Duke University Marine Laboratory

Transcript of Marine'Food'Webs:'' Small'Matters!' - Sites@DukeFood'Webs:'' Small'Matters!' ' Objectives'...

Marine'Food'Webs:''Small'Matters!''Objectives'Students(will((1)(identify(the(major(components(of(marine(food(webs,(including(phytoplankton(and(zooplankton,((2)(compare(marine(food(webs(to(terrestrial(food(webs,((3)(work(collaboratively(to(classify(marine(species,(and((4)(develop(hypotheses(regarding(the(contribution(of(phytoplankton(to(global(photosynthesis(rates.(((((Method'Students(are(assigned(a(“role”(in(the(marine(food(web.((Students(then(work(collaboratively(to(sort(themselves(into(a(working(food(web(and(compare(the(structure(of(their(food(web(to(that(of(terrestrial(habitats.(((((Materials''Instructors(should(have(a(blackboard(and/or(PowerPoint(capabilities.((Instructors(will(provide(students(with(“role”(cards(as(well(as(marine(species(cards(for(sorting.((Students(will(need(pens/pencils,(paper,(scissors,(and(glue.((

Background(Students(at(the(5thI6th(grade(level(are(taught(to(identify,(classify,(and(sort(organisms(in(the(environment.((Additionally,(important(learning(objectives(for(5thI6th(graders(include(describing(food(web(interactions(between(different(classes(of(organisms,(as(well(as(identifying(plantIbased(photosynthesis(as(the(base(of(this(food(chain.((However,(students(are(often(only(exposed(to(terrestrialIbased(food(webs.((This(exercise(teaches(students(how(food(webs(work(in(the(marine(environment.((This(is(important(for(understanding(global(photosynthesis(rates(since(phytoplankton(produce(50%(of(the(world’s(oxygen.((((((((Lesson'Activity'

1. Start(the(class(with(the(question,(“How(does(the(ocean(food(web(work?”((Allow(your(students(to(offer(suggestions(and(categorize(their(ideas(as(a(“circle(brainstorm,”((or(a(“cluster(diagram,”(see(http://writing2.richmond.edu/writing/wweb/cluster.html)(on(the(board.((Leave(your(brainstorm(up(on(one(portion(of(the(board(throughout(the(class.((You(will(come(back(to(this(brainstorm(at(the(end(and(revise(it(based(on(what(the(students(have(learned.((

2. Pass(out(marine(food(web(“role”(cards(to(the(students((see(Appendix(1).((The(cards(should(be(passed(out(in(the(ratio(of(1(sun:(4(phytoplankton:(2(zooplankton:(1(fish.((Then(ask(the(students(to(sort(

Grade'Level:(5I6(Subject'Areas:(Environmental(Science(Duration:(One(class(session((~45(mins)(Group'Size:(8(people(per(group((Setting:(Indoors(Key'Terms:'marine(ecosystems,(food(webs,(phytoplankton,(photosynthesis(Appendices:'Marine(Ecosystem(Role(Cards,(Marine(Species(Worksheet,(Example(Exam,(Feedback(Form(Author:'Alyse(Larkin,(Duke(University(Marine(Laboratory(

themselves(into(any(group(of(8.((It(is(ok(if(there(are(an(odd(number(of(students;(pass(out(more(phytoplankton(cards.(((

3. Next(provide(the(students(with(the(following(information:(“In(order(for(a(marine(food(web(to(work,(it(needs(1(sun(for(the(phytoplankton(to(share.((Every(zooplankton(must(have(at(least(2(phytoplankton(to(eat.((And(every(fish(much(have(at(least(2(zooplankton(to(eat.”((It(will(be(helpful(for(the(students(if(this(is(diagrammed(on(the(board(or(in(a(PowerPoint(slide.((

4. First,(ask(the(students,(“Does(your(food(web(work?”((In(all(likelihood,(their(original(groups(will(not(be(working(food(webs.(Ask(the(students(to(reIsort(themselves(in(to(working(marine(food(webs.((Give(the(students(10(minutes(or(so(to(sort(themselves(into(groups.((If(students(are(struggling,(provide(suggestions(on(how(they(should(sort(themselves(with(statements(like,(“What(is(your(role(in(the(foodweb?(Who(do(you(need(to(survive?”((

5. Once(they(have(sorted(themselves,(ask(the(students(to(volunteer(the(number(of(each(type(of(“role”(that(they(have(in(their(group,(or(“food(web.”((Let(them(know(whether(their(food(web(will(work(or(not.((If(it(does(not(work,(explain(why.((The(most(likely(explanation(is(that(there(are(not(enough(phytoplankton(for(the(zooplankton(to(eat,(or(that(there(are(not(enough(zooplankton(for(the(fish(to(eat.(((

6. Next,(ask(the(groups(to(split(in(half(and(draw(a(picture(of(their(food(web,(including(the(sun,(phytoplankton,(zooplankton,(and(fish,(as(a(small(team.((Then,(ask(the(

student(groups(to(work(together(to(draw(a(similar(food(web(from(a(terrestrial(environment.((When(they(are(finished,(ask(them(to(share(their(comparison(of(marine(and(terrestrial(food(webs.((Finally,(provide(the(students(with(the(following(information:((

a. Phytoplankton(are(singleIcelled(plants(found(in(the(ocean.((They(play(the(same(role(as(grass(does(in(a(terrestrial(ecosystem.(((

b. Zooplankton(are(very(small(invertebrates(that(eat(the(phytoplankton.((They(play(the(same(role(as(caterpillars(in(a(terrestrial(ecosystem.((

c. Fish(are(small(predators(that(eat(the(zooplankton.((They(play(the(same(role(as(birds(in(a(terrestrial(ecosystem.((

7. OPTIONAL(ACTIVITY:((In(order(to(familiarize(students(with(marine(phytoplankton,(zooplankton,(and(fish(species,(utilize(the(“Marine(Species(Worksheet.”(The(worksheet(provides(pictures(of(various(phytoplankton,(zooplankton,(and(fish(species.((Cut(out(and(randomize(the(photos,(then(have(the(students(glue(each(picture(to(a(piece(of(paper(labeled(with(the(correct(category,(either(phytoplankton,(zooplankton,(or(fish.((See(Appendix(2)((

(Reflection'8. At(the(end(of(class,(return(to(your(

brainstorm(that(you(created(at(the(start(of(the(lesson.((Ask(the(students(if(you(should(change(anything(on(the(brainstorm,(or(if(you(should(add(in(anything(new.((

9. Ask(the(students,(“What(is(the(most(abundant(organism(in(the(marine(environment?”((The(answer(is(phytoplankton.((Guide(their(thinking(by(asking(them(to(remember(the(number(of(each(type(of(organism(they(needed(in(order(for(their(food(web(to(work.(((

10. Ask(the(students,(“What(do(plants(provide(us(on(land?”(Once(someone(answers(“oxygen,”(ask(them(the(followIup(question,(“What(do(plants,(such(as(phytoplankton,(provide(other(organisms(in(the(ocean?”((

11. Finally,(ask(the(students,(“What(percent(of(the(world’s(oxygen(is(produced(by(land(plants?((What(percent(of(the(world’s(oxygen(is(produced(by(phytoplankton?”((As(homework,(ask(the(students(to(look(up(the(answer.((The(correct(answer(is(50%(of(global(oxygen(is(produced(on(land(and(50%(is(produced(by(phytoplankton.((This(can(be(used(to(lead(in(to(a(lesson(on(how(photosynthesis(works(in(aquatic(ecosystems.((

'Final'Products'

1. The(class(brainstorm(of(“How(does(the(ocean(food(web(work?”((

2. The(marine(and(terrestrial(food(webs(drawn(by(each(group.((

3. The(“Marine(Species(Worksheet”(((

Assessment'–'Evidence'of'Learning'For'Students:'

1. Students(make(major(revisions(made(to(the(brainstorm(created(at(the(beginning(of(class.(

2. After(the(class,(students(are(able(to(draw(correct(marine(food(webs.(

3. Students(are(able(to(correctly(classify(different(types(of(marine(organisms.(

4. Students(are(able(to(describe(the(importance(of(phytoplankton(in(the(marine(ecosystem.((

5. A(sample(quiz(on(this(subject(matter(is(provided(in(Appendix(3.(

For'Instructors:(1. What(portions(of(this(lesson(plan(

went(well?((What(portions(were(challenging?(

2. How(can(this(lesson(plan(be(improved(in(the(future?((

3. Will(you(use(this(lesson(plan(again?((

For'the'Author:(((((((Any(feedback(on(this(lesson(plan(would(be(greatly(appreciated.((You(may(send(the(feedback(form(in(Appendix(4(to(the(following(address:(( Alyse(Larkin(( 135(Duke(Marine(Lab(Road,((( Beaufort,(NC(

28561((

Common'Core'Standards'CC.1.SL.1.b:(Comprehension(and(Collaboration:(Build(on(others’(talk(in(conversations(by(responding(to(the(comments(of(others(through(multiple(exchanges.(CC.5.SL.1:(Comprehension(and(Collaboration:(Engage(effectively(in(a(range(of(collaborative(discussions((oneIonIone,(in(groups,(and(teacherIled)(with(diverse(partners(on(grade(5(topics(and(texts,(building(on(others’(ideas(and(expressing(their(own(clearly.(CC.5.SL.1.c:(Comprehension(and(Collaboration:(Pose(and(respond(to(specific(questions(by(making(comments(that(contribute(to(the(discussion(and(elaborate(on(the(remarks(of(others.(

CC.5.SL.1.d:(Comprehension(and(Collaboration:(Review(the(key(ideas(expressed(and(draw(conclusions(in(light(of(information(and(knowledge(gained(from(the(discussions.((North'Carolina'Essential'Standards'–'Science''5.L.2.1:(Compare(the(characteristics(of(several(common(ecosystems,(including(estuaries(and(salt(marshes,(oceans,(lakes(and(ponds,(forests,(and(grasslands.(5.L.2.2:(Classify(the(organisms(within(an(ecosystem(according(to(the(function(they(serve:(producers,(consumers,(or(decomposers((biotic(factors).(�5.L.2.3:(Infer(the(effects(that(may(result(from(the(interconnected(relationship(of(plants(and(animals(to(their(ecosystem.(6.L.1.2:(Explain(the(significance(of(the(processes(of(photosynthesis,(respiration,(and(transpiration(to(the(survival(of(green(plants(and(other(organisms.(6.L.2.1:(Summarize(how(energy(derived(from(the(sun(is(used(by(plants(to(produce(sugars((photosynthesis)(and(is(transferred(within(food(chains(and(food(webs((terrestrial(and(aquatic)(from(producers(to(consumers(to(decomposers.((AASL'Standards'for'the'21st'Century'Learner'1.1.2:'Use(prior(and(background(knowledge(as(context(for(new(learning.((1.1.9:(Collaborate(with(others(to(broaden(and(deepen(understanding'2.1.1:'Continue(an(inquiryIbased(research(process(by(applying(criticalIthinking(skills((analysis,(synthesis,(evaluation,(organization)(to(information(and(knowledge(in(order(to(construct(new(understandings,(draw(conclusions,(and(create(new(knowledge.'

3.2.2:'Show(social(responsibility(by(participating(actively(with(others(in(learning(situations(and(by(contributing(questions(and(ideas(during(group(discussions.('

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Appendix(1:((Marine(Food(Web(“Role”(Cards!!

Appendix(2:((Marine(Species(Worksheet((NOTE:(Do(not(include(the(following(organism(titles(on(the(worksheet((phytoplankton,(zooplankton,(fish).((All(images(taken(from(Wikimedia(Commons.((Instructors(may(add(other(images(as(he(or(she(sees(fit.(((Phytoplankton!

!(Zooplankton(

Fish((

((((((((((

Appendix(3:(Optional(Student(Evaluation((1. Draw(a(marine(food(web.((Include(the(sun,(phytoplankton,(zooplankton,(and(fish.((Draw(arrows(to(show(where(each(gets(its(food.(((

(((((((2. How(is(the(marine(food(web(similar(to(a(food(web(on(land?(((

(((

3. What(types(of(organisms(are(these?(((

( ((

(4. Why(are(phytoplankton(important(for(marine(habitats?((Why(are(phytoplankton(important(for(the(whole(world?((

(((

Appendix(4:(Teacher(Evaluation(of(Lesson(Plan((Please&rate&this&lesson&plan:&& &&Poor&&&& &&&&&&&Average& & Excellent&&&

& & & & && & & & & & &&&&&&&(please&check&one&box)&

&&1. What&portions&of&this&lesson&plan&went&well?&&What&portions&were&challenging?&

&&&&&&&

2. How&can&this&lesson&plan&be&improved&in&the&future?&&&&&&&&&

3. Will&you&use&this&lesson&plan&again?&&&&&&&&&&&&

&&Your&feedback&is&greatly&appreciated!&Please&return&this&form&to:&Alyse&Larkin,&135&Duke&Marine&Lab&Road,&Duke&University&Marine&Lab,&Beaufort,&NC&28516&

1& 2& 3& 4& 5&& & & & &