# #36 More Metrics (grades 6-10)

Regular price \$23.95

Soft-bound, 80 page book, 20 reproducible activity sheets, full teaching notes.
How much is a hectoliter? Who cares? This book teaches only those metric units that are important - meters, grams and liters - plus 6 useful derivatives. Play Metric Rummy. Build an amazingly sensitive straw balance sensitive to just 1 milligram. Learn to estimate to the last uncertain digit for measuring accuracy.

Click here for a complete list of materials and convenient shopping. Key: (1st/2nd/3rd) denote needed quantities: (1st) enough for 1 student doing all activities; (2nd) enough for 30 students working in 10 lab groups all self-paced; (3rd) enough for 30 students working in 10 lab groups, all doing the same lesson. Starred* items may be purchased below.
1/30/30: sheets of lined notebook paper
1/20/30: scissors
* 1/30/30: wooden spring-action clothespins
* 1/1/1: box paper clips
1/30/30: soda pop cans
* 1/10/10: rolls clear tape
2/50/60: pennies
2/50/60: index cards, 3x5 inch
1/1/1: piece of butcher paper for marking body measurements against a wall (optional)
* 4/150/150: plastic soda straws
* 2/60/60: straight pins
1/1/1: packages each of pinto beans, popcorn, lentils, long-grained white rice
1/20/30: staples
3/90/90: disposable cups, paper or styrofoam, 6 ounces or more
1/1/1: water source
1/4/10: teaspoons with approximate standard measuring capacity
* 1/1/1: sheet aluminum foil
1/1/1: bottle plain uncoated aspirin, 5 grain tablets
several: packages of candy, nuts, raisins or other treat with uniform small mass
• Lesson 1: To understand metric prefixes as simple multiples of ten. To estimate numbers by comparing lengths.
• Lesson 2: To visualize how metric units fit together as multiples of 10. To practice expressing one measure in terms of another.
• Lesson 3: To become familiar with 42 important interrelated facts about metric volume, mass and length.
• Lesson 4: To firmly link metric units with common conversion factors and concrete images.
• Lesson 5: To memorize metric relationships in a fun way.
• Lesson 6: To learn how to read a ruler accurately, estimating the last digit.
• Lesson 7: To distinguish between certain figures and uncertain figures. To appreciate that no measurement is exact.
• Lesson 8: To practice estimating between centimeter intervals. To check your accuracy with a millimeter scale.
• Lesson 9: To accurately locate millimeters, centimeters, and meters with a hairline on a metric scale.
• Lesson 10: To agree with a friend, within acceptable limits of uncertainty, where the hairline crosses a scale.
• Lesson 11: To practice measuring accurately with a ruler. To recognize that estimating is necessary no matter how accurate the ruler.
• Lesson 12: To practice measuring physical objects with a meter tape. To estimate the last digit.
• Lesson 13: To discover basic body proportions by making accurate measurements with a meter tape. To appreciate that body measure is not standard.
• Lesson 14: To improvise a single-arm balance beam, accurate to a milligram.
• Lesson 15: To learn to operate a microbalance. To compare the masses of small objects, ordering them from highest to heaviest.
• Lesson 16: To make a set of milligram weights for the microbalance. To use them to find the masses of small objects.
• Lesson 17: To graph how the mass of seeds increases in direct proportion to their numbers. To learn to draw and interpret graphs.
• Lesson 18: To construct a dripper that dispenses uniform water drops. To confirm that a teaspoon holds 5 mL of liquid.
• Lesson 19: To find the mass of a uniform water drop. To compare the volume of water a penny can hold with the volume contained in a centimeter cube.
• Lesson 20: To use a microbalance to determine if aspirin tablets are 100% pure. To estimate total quantity based on the mass of a few.
We encourage improvisation - it's one of the main goals of our hands-on approach! You and your students might invent a simpler, sturdier or more accurate system; might ask a better question; might design a better extension. Hooray for ingenuity! When this occurs, we'd love to hear about it and share it with other educators.
National Science Education Standards (NRC 1996)

#### TEACHING Standards

These 20 activity sheets promote excellence in science teaching by these NSES criteria:
Teachers of science...
A: ...plan an inquiry-based science program. (p. 30)
B: ...guide and facilitate learning. (p. 32)
C: ...engage in ongoing assessment of their teaching and of student learning. (p. 37)
D: ...design and manage learning environments that provide students with the time, space, and resources needed for learning science. (p. 43)

#### CONTENT Standards

These 20 activity sheets contain fundamental content as defined by these NSES guidelines (p. 109).
• Represent a central event or phenomenon in the natural world.
• Represent a central scientific idea and organizing principle.
• Have rich explanatory power.
• Guide fruitful investigations.
• Apply to situations and contexts common to everyday experiences.
• Can be linked to meaningful learning experiences.
• Are developmentally appropriate for students at the grade level specified.

#### Unifying Concepts and Processes

NSES Framework: Systems, order, and organization • Evidence, models and explanation • Constancy, change, and measurement
Core Concepts/Processes: Reach easy familiarity with commonly used metric units - meters, grams and liters - plus six commonly used derivatives. • Visualize how metric units would all fit together on a giant kilometer ruler.

#### Science as Inquiry (content standard A)

NSES Framework: Identify questions that can be answered through scientific investigations. • Design and conduct a scientific investigation. • Use appropriate tools and techniques to gather, analyze, and interpret data. • Develop descriptions, explanations, predictions, and models using evidence. • Think critically and logically to connect evidence and explanations. • Recognize and analyze alternative explanations and predictions. • Communicate scientific procedures and explanations. • Use mathematics in all aspects of scientific inquiry.
Core Inquiries: Learn to measure accurately by recording all certain figures, plus one uncertain figure. • Read scales independently and compare significant figures.

#### Physical Science (content standard B)

NSES Framework: Properties of objects and materials
Core Content: Objects have properties of length, area, volume, and mass that may be accurately measured but never exactly known.

#### Science and Technology (content standard E)

NSES Framework: Abilities of technological design • Understanding about science and technology
Core Content: Construct a microbalance using a drinking straw. Cut paper squares to weigh small objects in micrograms.