Lesson 2, Activity 2
Introduction to Density Reflection
Group 2
Group 2.a
Learning Goals
a) Review Density
b) Observe differentiation of different substances according to their densities.
c) Explain why the planets have different layers – How can we use this to classify planets.
d) Labels are based on position / not material substance
Prior Knowledge
a) Understand and explain the concept of density
b) Planets are made of different materials
Misconceptions
a) All planets are made of the same materials
Group 2.b
Previous Activity
a) Introduction to the planets
b) Explore volume and density
c) Finding the density of an unknown
Highlight Activity / Following
a) Pouring different liquids into a container
b) Predicting / observing results due to different densities
c) Compare densities / location of substances
d) Defining differentiation -> concept
e) Observed the lack of differentiation of various solids
f) Describe the formation of planets / objects in terms of density.
g) Compare the model of Earth with new understandings of density (Graduated cylinder)
h) Sketch a diagram of an unknown planet using density data. Explain… (Homework :-) ) ->radioactivity
Group 2.c
Atlas Insights
-Formation of planets is high school knowledge
-States of matter a reoccurring topic
Teacher View
-Geologic timescale for the formation of Earth
-Compare other planets (compare to Earth)
-Homework activity during class – 4 support
-Demo of densities #2
solids / liquids
-Gravity of planets
(gas layers)
-Nebular hypothesis
(not enough time)
-Not just directions
-Involve students
-Focus on inquiry
Learner View
-Seen it before
-I want to pour
-Homework may have been confusing
-How is this relevant?
-When is lunch? :-)
-How did Earth and other planets form
Give me more
-How do we know (proof)
