elementary essential lab levers on me science capacity development & school reform...
TRANSCRIPT
ElementaryEssential Lab
Levers on Me
Science Capacity Development & School Reform Accountability
Agenda• Lab Norms
• Bellringer
• Sunshine State Standard
• Engage - BrainPOP
• Explain – Background Knowledge
• Explore - Lab
• Elaborate
• Evaluate
• Gizmo
Lab Norms
1. Be responsible.
2. Follow ALL instructions carefully.
3. Please avoid touching any equipment, chemicals, or other materials in the laboratory area until you are instructed to do so.
4. Avoid eating food, drinking beverages, or chewing gum in the laboratory.
5. Dress properly during a laboratory activity: safety goggles, lab coats, long hair tied back, no sandals, no dangling jewelry.
Levers on Me Lab
Florida Sunshine State Standard Benchmark: SC.H.3.2.1
The student understands that people, alone or in groups, invent new tools to solve problems and do work that affects aspects of life outside of science.
Additional Florida Sunshine State Standard Benchmarks:
SC.H.3.2.3: The student knows that before a group of people build something or try something new, they should determine how it may affect other people.
BellringerCities like West Palm Beach have water purification programs to keep drinking water free from bacteria and other pollutants. How does this help people living in cities?
A. It eliminates filters from factories.B. It produces large amounts of water.C. It helps people by cleaning the air they breathe.D. It helps people by making the water safer to use.
EXPLAIN: Background Knowledge• SC.H.3.2.1 also assesses SC.H.3.2.3.
• Students need to understand simple tools and how these tools help us.
• Benchmark is assessed as MC, SR (low, moderate, high complexity).
• People in many jobs must use tools. Cooks use pots and pans. Mechanics use screwdrivers and wrenches.
• Scientists use tools to measure and observe objects in nature.
Scientific Tools• People in their everyday lives use tools.
We use tools at our jobs and we use tools, such as pots and pans, to help us cook.
• Construction workers and mechanics use screwdrivers and wrenches.
• Scientists use tools to measure and observe objects in nature.
Scientific Tools
A tape measure helps you measure the length of curved or irregular surfaces like your head. It measures in units called centimeters (cm).
A spring scale can measure weight or friction. It measures in units called newtons (N).
A magnifying box allows us to study small objects such as pebbles or bugs.
Pictures obtained from Harcourt Online
Scientific Tools
A microscope allows us to see things too small for the naked eye (without glasses or contacts).
A thermometer measures the temperature of liquids and the air. It is measured in degrees Celsius or Fahrenheit.
Use a dropper to move small amounts of liquid or to measure the volume of a liquid by counting drops.
Scientific Tools
A balance is a tool that measures the amount of matter in an object – it measures its mass. The unit for mass is grams (g).
Forceps help you pick up small objects. They help you to hold up the object when you are looking through a hand lens.
A hand lens allows you to look at objects with more detail. When you place the object beneath the lens, the lens makes the object look larger.
Pictures obtained from Harcourt Online
Additional Background Knowledge• A simple machine is a tool that makes it
easier for us to do things.
• A lever is a simple machine. It makes it easier for us to move things.
• Levers have two parts: the arm and the fulcrum.
• A rake is an example of a lever. This simple machine reduces the force needed to lift or move an object.
Team Jobs
Team Jobs
Purpose:
To provide students with the understanding of how simple tools can help us do work.
Objective:
I can identify how simple tools, such as a lever, can help us to solve problems and do work.
Materials:
• 1 plastic ruler with metric measurements (cannot be bendable)
• 1 paper ruler
• 1 small box
• 5 marbles or other small objects of equal size and weight
• 1 rubber band
• tape
Hypothesis
• If you place the fulcrum close to the object, then the object will
____________________________.
1. Place the pencil under the ruler (like a see-saw) at the 15 cm mark.
2. Tape the box (with marbles inside) on one end of the ruler.
3. Put the five marbles inside the empty box.
4. Slip a rubber band around the other end of the ruler.
5. Allow this end of the ruler to stick out approximately 1 cm over the edge of the table.
EXPLORE: Procedures
6. Use the rubber band to lift the box. You will need to pull the rubber band stretching it down so that you lift the box with the marbles at the other end of the ruler. Continue to lift until the rubber band end of the ruler touches the table.
7. When the ruler touches the table, record the height (in centimeters) that the box was lifted.
8. Change the position of the fulcrum two additional times. Record the measurement and then repeat step 6 for each changed position.
9. Record your results on the table.
EXPLORE: Procedures
Collecting Data
• Data is the information gathered during an experiment. Sometimes data involves counting or measurements such as length.
• Data that involves numbers or measurements should be organized in a table. Once the data has been collected from the experiment, it must be analyzed, or a decision about what the data means is drawn.
Levers on Me Data
Position of Fulcrum
Distance Box with Marbles Was
Lifted
1. cm
2.cm
3.cm
Graphing
• Sometimes calculations need to be completed. In addition, a graph may need to be compiled. A graph helps people to understand the data and gives viewers a picture of the data. A conclusion about what was learned from the experiment can then be drawn from the analyzed data.
• Use the data collected and construct a bar graph.
Conclusion
A conclusion is an explanation based on evidence from observations. It answers, “Does the data support the hypothesis?”
Conclusion1. Was your hypothesis correct? Why or
why not?
2. Where did you have to position the fulcrum so that the box was able to be lifted higher? Explain.
3. What do think would happen if the box was empty? Explain.
4. Why do you think this tool is important to our everyday lives?
Elaborate
ExploreLearning Gizmos: Levers
EVALUATE
A. HammerB. CompassC. PencilD. Saw
Billy is packing his backpack to go on a hiking trip. Which of the following tools would come in handy the most while hiking through the woods?
Science Capacity Development TeamCristian Carranza, Science Manager
Shari Bremekamp
William Rizzo
Crystal Clark
Adrian Seepersaud
Annmarie Dilbert
Amie Souder
Christel Leahy
Heather Trapani
Terrence Narinesingh
Robera Walker
Kirk Nieveen
Paul Wojciechowsky
Andrea Reilly