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Day 2: Nature of Science and Engineering NSE 3-6 MSTP Region 11 Teacher Center. Today’s Trainers: Tamara Moore and Gillian Roehrig. Goals and Agenda. Teachers will experience an integrated engineering and science lesson Engineering is Elementary ( EiE )
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Day 2: Nature of Science and Engineering NSE 3-6 MSTP Region 11 Teacher Center Today’s Trainers: Tamara Moore and Gillian Roehrig
Goals and Agenda • Teachers will experience an integrated engineering and science lesson • Engineering is Elementary (EiE) • Lighten Up: Designing Lighting Systems • Correlating the EiE unit to State Standards
EiE-Engineering is Elementary EiE was developed by the Museum of Science in Boston in 2003. Funded by NSF grant. • Integrate engineering and technology into science lessons that you currently teach. • Does not explicitly teach the science, adds on to deepen knowledge by combining one field of engineering with science content. • The units are not built upon each other; so they can be taught as a stand alone or in any order. • http://www.mos.org/EiE
EiE-Engineering is Elementary The main goal of EiE: • Increase children’s technological literacy. • Increase elementary educators’ abilities to teach engineering and technology to their students. • Modify the educational systems to include engineering at the elementary level. • Conduct research and assessment to further the first three goals and contribute knowledge about engineering teaching and learning at the elementary level.
Teacher Guide Each EiE Unit includes: • Lesson plans • Duplication Masters (e.g., student handouts) leveled for Basic and Advanced abilities. • Assessment materials • References for background resources
Teacher Guide Structure • Overview • Prep Lesson • Lesson 1: Engineering Story • Lesson II: A broader view of an engineering field • Lesson III: Scientific data to inform engineering design • Lesson IV: Engineering design challenge • Assessment
More on EiE Story books: $6.99 Teacher guides: $45 Materials kits: most around $300 EiE Educator Resources: search for content connections, multimedia tools, and supporting documents
Overview of “Lighten Up: Designing a Lighting System” 1. Omar’s Time to Shine (Prep: 10-15 min., lesson: 90-120 min.) 2. Think Like an Optical Engineer (Prep: 20-25 min., lesson: 60-75 min.) 3. Shedding Light on It (Part I: Prep: 35-40 min., lesson: 75-90 min., Part II: Prep: 45-60 min., lesson: 55-60 min.) 4. Designing a Lighting System (Part I: prep: 15-20 min. lesson: 55-60 min., Part II: prep: 10-15 min. lesson: 90-120 min.)
As I walk around, I stay with you. I’m sometimes ahead of you and sometimes behind you. If you were smaller, I would be too. If you come toward me, I often get bigger (especially at night). If you shine a light on me, I disappear. What Am I?
Shadows Individually: • What is a shadow? • Where do shadows come from? • Are there different kinds of shadows?
Shadows • The riddle says “If you come toward me, I often get bigger.” • Why might some shadows change size as you move while others do not?
Pinhole Lab Predict: Observe: Explain:
Pinhole Lab • Explore what happens to the position of the spot of illumination when you move the maglite tip either to the right or to the left, or upward or downward. Describe your observations. • What strategy did you use to make a successful prediction; that is, how did you decide where to mark the screen?
Pinhole Lab Write a statement (hypothesis) or draw a picture that explains your observations when you move the maglite from left to right.
Pinhole Lab • Lights travels from a source in all directions. • Lights travels in straight lines • A light ray diagram is a convenient way of representing how light travels in a specific situation.
Pinhole Lab • Imagine that you set up two maglites as suggested in the picture to the right. • Predict: • Observe: • Explain:
Pinhole Lab Add light rays to the following top-view diagram to show where the dots of illumination would appear on the screen.
Shadows Lab New experimental set-up In the pinhole activity we developed two hypotheses: 1. Light leaves a point source in many directions and 2. Light travels in straight-line paths. Are these ideas supported by this new experimental evidence?
Shadows Lab • Predict what you will see if you move the maglite closer to the blocker. • Observe • Explain
Shadows Labs • In the pinhole activity we developed two hypotheses or main ideas: 1. Light leaves a point source in many directions and 2. Light travels in straight-line paths. Are these ideas supported by this new experimental evidence?
Shadows Lab • Imagine that you placed two maglites in front of the blocker, as suggested in the picture. Predict what you will see on the screen. • Observe • Explain
Shadows Lab • Draw a light ray diagram describing what happens with the two maglitesTM
Shadows Lab • S3. Below is a not-to-scale diagram of the sun, moon and part of the earth’s surface. The diagram shows an occasional situation when the moon’s orbit places it between the earth and the sun. • For each observer, indicate whether they would be located in the umbra part of the shadow, the penumbra part, or in a region where there is no shadow. • Suppose each observer looked in the direction of the sun through dark glasses (to protect their eyes). Indicate whether each observer would ‘see’ all of the sun, part of the sun, or none of the sun (that is, it would appear as a dark disc).
Mirror Lab • In this experiment we extend our investigation of light to consider what happens when light interacts with a shiny surface • Predict • Observe • Explain mirror Index card
Mirror Lab • Investigate what happens when you change the angle of the light hitting the mirror The angle of incidence is always equal to the angle of reflection
Intensity Demo • What happens to our ability to see the image as we move the flashlight? • As the distance that the light travels from its source increases, the intensity of the light decreases
Lesson 1: Omar’s Time to Shine • Read the story • Discuss optical engineering • Introduce ideas about light • Introduce the engineering design process
Lesson 1: Omar’s Time to Shine • What type of work do optical engineers do? • What did you learn about engineering from Omar? Technologies Optical Engineers Design and Improve • Coating to block light • Lasers for DVD player • Fiber optics • Camera lenses • Microscopes
Lesson 1: Omar’s Time to Shine • Let’s add to our poster “What we know about light?”
Lesson 1: Omar’s Time to Shine • How did Omar use the engineering design process to help him design a lighting system?
Lesson 2: Think Like an Optical Engineer • Explore how light interacts with a variety of materials • Learn vocabulary around light • Connect findings to the work of optical engineers
Lesson 3: Shedding Light on It • Explore how light travels in a straight line until it comes in contact with another medium • Experiment with reflecting light using mirrors to determine the law of reflection • Explore the relationship between the distance of an object from a light source & the intensity of light on that object.
Engineering Design Challenge When Ancient Egyptian tombs were re-discovered in the 1920’s, people wanted to make copies of the hieroglyphs and paintings inside the tombs to display in museums around the world. • Artists were sent to the tombs • They needed light inside the tombs • They only had one light source… the sun!
Engineering Design Challenge Your engineering team needs to design a lighting system to light as many of the hieroglyphs inside the Egyptian tomb as possible using only mirrors and one light source. You will tell a documentary film crew about your lighting system design when you are finished.
Criteria and Constraints • What does our lighting system need to do? • What requirements do we need to meet? • What are our constraints?
Lesson 3: Shedding Light on It • Most of Lesson 3 are activities: • Path of light activity • Angle of reflection activity • Intensity activity This content was covered in the Shadows Lab.
Lesson 3: Shedding Light on It • Vulture Hieroglyphs! • How can we make sure the artists can see the details of the hieroglyphs clearly enough to copy them accurately? • Let’s look into the tomb. Is the light intense enough to copy them?
Light Intensity Meter • Because there is already some light in the box, you’ll need to evaluate the intensity of the light on each hieroglyph. • Don’t remove lid!!! Use the viewing doors to peek inside. • Fill in sheet 3-15 • Record the highest number block for each hieroglyph A-F.
Light Intensity and Distance • Draw the paths the light took to illuminate each hieroglyph A – F on Handout 3-16 • Turn in flashlights.
Lesson 4: Designing a Lighting System Engineering Design Challenge Your engineering team needs to design a lighting system to light as many of the hieroglyphs inside the Egyptian tomb as possible using only mirrors and one light source. You will tell a documentary film crew about your lighting system design when you are finished.
Engineering Design • What is a system? • A system is a group of parts or steps that interact to achieve a goal. • What are the main parts of our system designs? • The light and mirrors • Is a system a technology? How do you know? • A technology is anything that people design to solve a problem or meet a need. Systems can be designed to help solve problems.
Evaluating our designs • Intensity Score • We will use handout 4-11 in the same manner as we did in Lesson 3. Transfer the intensity score to sheet 4-6 • Cost score: • See the Lighting System Materials Price Sheet (4-10) • Transfer total cost to cost score by using sheet 4-6 • Intensity Score + Cost Score = Total
Imagine! • Individually, brainstorm at least two ideas for how to light the hieroglyphs (4-4) • Share ideas with your group
Plan! • In your groups, plan for your design using the two handouts marked 4-5.
Improve! • Fill out sheet 4-9 • Then start again with Plan then Create… • The interview!!! • See page 4-12 for the interview… • Many ways to implement this!
