Lesson: Populations

Warm Ups, etc:

Do Ups Outnumber Downs?

Lecture Notes: #content

Symbiosis- this is best done as diagrams, with examples discussed and then drawn, giving all who benefit a happy-face, while those unchanged get a "Meh" and those harmed a frown.

definition: living together (includes endosymbiosis theory of mitochondria/chloroplast -review to SOL2 energy/SOL3 cell structure)

Mutualism- both benefit

Commensalism- one benefits, one unchanged

Parasitism- one benefits, one harmed

Objectives and Vocabulary: #content

BIO.8 The student will investigate and understand dynamic equilibria within populations, communities, and ecosystems. Key concepts include

a) interactions within and among populations including carrying capacities, limiting factors, and growth curves;

Population

Biotic

Abiotic

Ecosystem

Population growth

Initial growth

Exponential growth

Steady state

Decline

Limiting factors

Carrying capacity

Symbiosis

Mutualism

Commensalism

Parasitism

Activities, Assignments, Etc.

Graphs - Population Growth

- Students explore limiting factors and the typical growth patterns that appear in populations. Abiotic and Biotic factors are reviewed.

- Lecture notes are on the first set of slides. The last four slides are "blank" and can be printed in handout form.

Assignment 14.4 - 14.5

14.4 Define Vocab, p414 Apply, p416 Data #1-3, p417 Analyze, p418 Apply, Formative Assessment #2

14.5 Define Vocab, p420 Apply, p421 Analyze

Closure - WS 47-1/Transect samples (from ancient textbook) - students interpret graphs and review key concepts and vocabulary.

The back of the worksheet includes an activity where students perform transect sampling. It demonstrates a technique of quantitative analysis of a population (insects on a grid) that reinforces concepts of the lesson, while also reviewing skills that are required in SOL 1.

Extension - Graph data for each scenario, determine limiting factors and identify graph types