Section 1
Scientists Measure Matter Using Standard Units
Scientists use the metric system with units like centimeters, grams, and milliliters to measure length, area, volume, mass, density, and weight of objects in standardized ways.
Grade 4 students explore how matter is measured using standard units in this lesson from Chapter 5 of Science: A Closer Look. Students learn key measurement concepts including length, area, density, and weight, as well as how the metric system uses prefixes like kilo-, centi-, and milli- to define units based on powers of ten. The lesson also covers how to calculate area by multiplying length by width and how to compare irregular shapes using unit squares.
Section 1
Scientists Measure Matter Using Standard Units
Scientists use the metric system with units like centimeters, grams, and milliliters to measure length, area, volume, mass, density, and weight of objects in standardized ways.
Section 2
Density Determines Whether Objects Float or Sink
Density is calculated by dividing mass by volume. Objects with lower density than water float, while those with higher density sink. Heat can change density by causing particles to spread apart.
Section 3
Gravity Pulls Objects Based on Their Mass
Weight measures gravity's pull on an object's mass. Though mass remains constant everywhere, weight changes on different planets. A balance measures mass while a scale measures weight in newtons.
Section 4
Students Calculate Area Using Unit Squares
To find area, students count how many unit squares cover a surface. For regular shapes, multiply length by width. For irregular shapes, divide into smaller sections, calculate each section, then add them together.
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Section 1
Scientists Measure Matter Using Standard Units
Scientists use the metric system with units like centimeters, grams, and milliliters to measure length, area, volume, mass, density, and weight of objects in standardized ways.
Section 2
Density Determines Whether Objects Float or Sink
Density is calculated by dividing mass by volume. Objects with lower density than water float, while those with higher density sink. Heat can change density by causing particles to spread apart.
Section 3
Gravity Pulls Objects Based on Their Mass
Weight measures gravity's pull on an object's mass. Though mass remains constant everywhere, weight changes on different planets. A balance measures mass while a scale measures weight in newtons.
Section 4
Students Calculate Area Using Unit Squares
To find area, students count how many unit squares cover a surface. For regular shapes, multiply length by width. For irregular shapes, divide into smaller sections, calculate each section, then add them together.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter