5-1-PROPERTIES OF MATTER
pag.90-91
5-2-DENSITY
pag.92-93
GREAT JOB, ALEJANDRO!!
5-3-FORCES AND THEIR EFFECTS
pag.94-95
5-4-FORCES AND MOTION
pag.96-97
5-5-TYPES OF AIRCRAFTS
pag.98-99
5-6-EXPERIMENT:
MEASURE THE FORCE OF FRICTION
pag.100
5-7-CRAFT: BUILD A BOAT
FROM RECYCLED MATERIALS
pag.101