The Effect of Guided Inquiry Laboratory on Conceptual Understanding Miha Lee California State...

The Effect of Guided Inquiry Laboratory on

Conceptual Understanding

Miha LeeCalifornia State University,

Northridge

STUDENTS' PRECONCEPTIONS ABOUT METALS’ PHYSICAL PROPERTIES

Codes Concept

a matter that conduct (heat) and electricity

b matter that has malleability and ductility

c matter that has metallic luster

d matter in a solid state at room temperature

e matter that has free electrons

f matter that is dense and hard

g matter that has crystal structure of atoms

h matter that has magnetism

i matter that is like iron

STUDENTS' CONCEPTS ABOUT METALS’ CHEMICAL PROPERTIES

Codes Concept1 elements that readily lose electrons to form cations

2 elements that has metallic bond between cations and free electrons

3 elements that are likely to be oxidized (rusted)

4 elements that react with acids generating hydrogen gas

5 elements that react with water generating hydrogen gas

6 elements that are placed at the lower left on the periodic table.

7 elements composed of cations that are solidified

8 elements that are strongly reactive

9 elements that have strong reducing ability

10 elements become basic when dissolved in water

61%

37%

# of Students who achieved the goal

of each activity

% of Students who

achieved the goal of each

activity

Activity 1 133 84.18

Activity 2 156 98.73

Activity 3 157 100

Activity 4 147 93.04

Students’ achievement on the formative tests

in each activity