Presentation on theme: "Learning Modules for 7th– 12th Grade Life Sciences"— Presentation transcript:
1Learning Modules for 7th– 12th Grade Life Sciences Plant ReproductionLearning Modules for 7th– 12th GradeLife Sciences
2Today’s WorkshopPollen Crime Lab + Seed Dispersal Labs created to teach students about plant reproduction and life cycleIncorporate two major stages of plant reproduction (fertilization & seed production)Fun, hands-on activities that incorporate real-life scenarios (forensics & competition)
4Why Pollen? Reinforces concepts of plant reproduction Easily stained and visualized using microscopesUnique and diverse morphologyReal-world application that appeals to studentsIncorporates investigation and experimentation techniques
5Pre-Lab Presentation Structure of a flower and reproductive organs Structure of pollen grainHow do scientists use pollen to answer questions about organisms and their environmentUsing pollen in crime and accident scenesVideo: time lapse pollen graingermination
6Pollen Crime Scene Activity Examine the pollen structure from four plant sources and determine the guilty suspect of an assault.
7Flowers found at each suspect’s home Each lab group:Pre-made slide:Flowers found at each suspect’s homeVictimSuspect 1Suspect 2Suspect 3
9Learning ObjectivesUse experimental and investigatory techniques (create hypotheses, collect data, draw conclusions)Improve microscopy skillsIdentify and distinguish unique biological speciesRecognize real-life applications of plant biology
10California Learning Standards 7th Grade Life Sciences:Structure and Function in Living Systems (5 a, f)Investigation and Experimentation (7 a, c, d)High School Biology:Genetics (2b)Ecology (6a)Evolution (7d)
11Assessment Worksheets, lab write-ups Exam questions, quizzes Building upon learned knowledge on subsequent activities
13Seed Dispersal Activities Objectives:Educate students about an important stage of plantreproductionTeach students how to recognize the different mechanismsplants use to disperse their seedsIncorporate material pertaining to plant competition andinbreeding depression
14Name That Diaspore!! (Seed Dispersal Lab I) Students will be presented with a diverse array of plant diaspores and will be asked to determine the mechanism by which they are likely to disperse.*Diaspore = seed + any additional tissues that assist in dispersal
16Build Your Own Diaspore! (Seed Dispersal Lab II) Students will be given craft materials (construction paper, glue, paper clips, etc.) to construct their own plant diaspores that will ride the wind.Each group of students will compete their seeds to determine which model is m the most efficient wind-disperser.
18High School Modifications Pollen Activity:Include more details about plant reproduction: double fertilization, autogamy vs. allogamy, mating systems, meiosis & mitosis, gametophytes & sporophytesSeed Dispersal Activities:Inbreeding depression, plant competition and other ecological mechanisms, more details in plant physiology