DE Science Elementary

1
DE Science Elementary
Organisms Survival in Ecosystems
2
Survival The Big Ideas

• When an ecosystem changes, living things survive,
  move, or die off.
• Species that adapt over time can survive and
  reproduce.
• Rapid changes make survival for species more
  difficult than gradual changes.
• Changes to an ecosystem are part of the process
  of adaptation and survival.
• Some species may survive by moving to a location
  with better conditions.

3
Survival Using DE Science Content

• Exploration Survival
• Video How Sea Creatures Protect Themselves from
  Predators
• Video How Sea Creatures Use Camouflage to Avoid
  Predators

4
Physical Features The Big Ideas

• Animals move around independently to find food
  and shelter and to get away from predators.
• Animals have different structures and systems to
  allow them move, to find food, to utilize
  nutrients and to get rid of waste.
• All animals reproduce.

5
Physical Features Using DE Science Content

• Video Birds and Insects

6
Learning The Big Ideas

• The behavior of an organism is a response to a
  stimulus, such as amount of sunlight or
  availability of food.
• Some behaviors are inherited.
• Many behaviors must be learned. Learned behaviors
  are not inherited.
• Many human behaviors are a combination of
  inheritance and learning.

7
Learning Using DE Science Content

• Video Segment Physical and Behavioral
  Adaptations

8
Criteria The Big Ideas

• Scientists observe and record the features of
  living things.
• A microscope and magnifying glass are tools for
  studying very small things.
• Scientists classify living things using many
  features and some behaviors.
• Scientists often study the heredity of an
  organism to help classify it.

9
Criteria Using DE Science Content

• Video Segment The Five Kingdoms

10
Insect Life Cycles The Key Ideas

• Metamorphosis describes the way that insects
  develop, grow, and change their form.
• The majority of insects undergo a complete
  metamorphosis that includes four life cycle
  stages (egg, larva, pupa, adult).
• Some insects undergo an incomplete metamorphosis
  that includes three life cycle stages (egg,
  nymph, adult).

11
Insect Life Cycles Using DE Science Content

• Video segment The Lives of Butterflies
• Video segment A Bees Life
• Video segment Complete Metamorphosis
• Image Grasshopper Life Cycle