Lesson 2

Part 1 - Engage Students
(estimated time=10 minutes)
Have students fill in the what I know and what I want to learn sections of a K-W-L chart.  For those who chose this option for Lesson 1, ask students to add to the K-W-L from the previous lesson.  Have students pair-share one thing they know and one thing they want to learn and agree as a pair to share one of each with the entire class.  Have students share their responses.  Look for possible misconceptions within student responses, use them as teachable phrases.  Have students revise their K-W-L as some of the aspects are reviewed.

Part 2 - Reviewing World 1
OBJECTIVE: TO ENSURE THAT STUDENTS THAT HAVE A COMMON SET OF UNDERSTANDINGS FROM THE FIRST WORLD OF THE GAME.
(estimated time=20 minutes)




SUMMARY OF WORLD ONE:

World 1 consists of nine levels in a setting of a Wild West town that is suspended, upside down, on the ceiling of Harold’s lab. The player (Harold) advances through the levels by entering the “gold mines” at the end of each level. The main concept of World 1 is focused on van der Waals forces that allow nanoscale Harold to “defy gravity” and walk on the ceiling. If Harold’s weight (from picking up too many items, for example) exceeds his adhesive force, it will cause him to fall from the ceiling and lose a “life”





Below are the questions that were asked during the discussion from Lesson 1 followed by responses from Nikki's notebook pages as well as some game playing tips.
  • Where is Harold moving in the game? What allows him to do this?
    • He is on the ceiling of his lab.  Adhesion is the attraction (stickiness) between two different substances. We don’t experience adhesion at our scale (the macroscale), but it is a HUGE force at the nanoscale!  (Van der Waals forces allow Harold to defy gravity at the nanoscale.) 
  • What are the red particles he finds in this environment?  What can Harold use them for?
    • The red particles are gold nanoparticles.  Gold we can hold in our hands contains billions and billions of gold (Au) atoms. On the nanoscale, Geckoman is holding only a few hundred gold atoms.  The smaller size makes them react differently with light and appear red in color! Harold can shoot them at the Nanoids and they will increase the weight of the nanoids beyond the adhesion forces so they fall off the ceiling.  Be careful, however, if Harold picks up too many gold particles and gets hit by the nanoparticles the Nanoids are shooting at him, his weight may make him fall off the ceiling as well!
  • What are the Nanoids?  What can they do by shooting at Harold?
    • World 1 also introduces the Nanoids, the tiny alien race who want to steal Harold’s shrinking machine so that they can bring themselves to the macroscale. The Nanoids attack Harold by sticking nanoparticles to him and thus, increase his weight. However, Harold can fight back using the same technique and slingshot gold nanoparticles at the Nanoids in order to increase their weight. In World 1, the Nanoid characters all have an “adhesion” meter over their heads; when the adhesion drops to zero, the Nanoid falls off the ceiling.
  • Are there different sized Nanoids?  How does size make a difference? 
    • Larger Nanoids have more trouble staying on the surface because they weigh more.  By luring them onto the rough surfaces of the game space, they can more easily fall off the ceiling.
  • Does the surface that the game is played on change in world one?  How is it different?
    • The surfaces can be smooth and rough (bumpy).  Smooth surfaces provide more contact area and so Harold (and the Nanoid's stick better to them).   The reason Geckoman has a “rough” time walking on those bumpy surfaces is because he has less contact and less adhesion.  
  • How could you increase his adhesion and give him more contact with the surface?  What will happen on smooth surfaces?
    • Geckoman can crawl to increase contact with the surface.  Or, he can "power-up" with a drop of water to temporarily increase his adhesion.  Both Geckoman and Nanoids adhere more to smooth surfaces, so, if you want Nanoids to fall lure them to the rough surfaces!
  • Does Harold's and the Nanoids' ability to walk on these surfaces change? How?
    • The surfaces can be smooth and rough (bumpy).  Smooth surfaces provide more contact area and so Harold (and the Nanoid's) adhere better to them.  The reason Geckoman and the Nanoids have a “rough” time walking on those bumpy surfaces is because they have less contact and less adhesion.
  • Are there ways that Harold can stick to the surface more?  How?
    • By crawling or by powering up with a water droplet.
  • What happens when you stack the gold up?
    • Stack up gold increases their size.  They change the color they reflect from red to blue to gold, then, they fall off the ceiling because their weight has increased beyond their adhesive forces.  If they fall off the ceiling, you gain an extra life!
Part 3 - Introducing World 2
OBJECTIVE: TO ENCOURAGE STUDENTS TO PLAY WORLD TWO.
(estimated time=20 minutes)
Remind students that you will have a discussion after 20 minutes of play and that at that time, all students must stop playing and participate in the discussion. 

Have students log on to the game. 

There are two secret pass codes to get past the levels in each world.  The first trick is when a player logs on after losing a life or logging on as the same player from the previous playing event, they mouse over and left-click the lower left hand corner of the world and levels hotbutton screen a little textbox appears. The player can enter the number of the level they want to enter the move the cursor over a little to the right and left-click.  They will reach that world directly, but without any points.  Another secret pass is the tab button on the key board.  Points ARE given for doing this. 

Whatever method you choose to tell them, have them move to world two (a puddle in the laboratory floor).

Part 4- Discussion of World 2
(estimated time=10 minutes)
Have students stop their game play, by either exiting the game, or not beginning a new level on the game.  Explain that the goal of the discussion is to help students improve how they play the game.  (You can review the scientific content of the game in Lesson 3. ) Then, conduct a classroom discussion that centers on the following questions:
  • Where is Harold moving in the game? What can he do in this world?
  • What are the green particles he finds in this environment?  What can Harold use them for?
  • Are there different sized Nanoids?  How does size make a difference in this world
  • Does the surface that the game is played on change in world two?  How is it different? 
  • Does Harold's and the Nanoids' ability to walk on these surfaces change? How?
  • What can Harold use to jump differently in this world?
  • Are there ways that Harold can move more quickly through the liquid?  How?
  • What happens when you go through the charge shower?
HOMEWORK: Have students try to complete World 2 for homework.
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