© REGION 4 EDUCA TION SERVICE CENTER.
ALL RIGHTS RESERVED.
UNIT 1:
Introduction..........................................................2
Lesson 1: Gateways to Science
.................................................................. 2
Lesson 2:
Safety ....................................................................................... 6
UNIT 2:
Existence of Life and Environments ..................20
Lesson 1: What Allows Life to Exist? ...................................................... 20
Lesson 2:
Dichotomous Key ................................................................... 28
Lesson 3:
Schoolyard Microhabitat......................................................... 38
Lesson 4:
Environments and Organisms................................................ 48
Lesson 5:
Flow of Energy ....................................................................... 65
Lesson 6:
Biodiversity............................................................................. 81
Lesson 7:
Cycling of Matter .................................................................... 90
Lesson 8: Variations within Populations................................................ 102
Lesson 9:
Natural Selection.................................................................. 113
UNIT 3:
Impacting Earth’s Systems..............................124
Lesson 1:
Catastrophic Events ............................................................. 124
Lesson 2: Weathering, Erosion, and Deposition................................... 142
Lesson 3:
Groundwater and Surface Water.......................................... 164
Lesson 4:
Ecological Succession ......................................................... 178
TABLE of Contents
