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Spaced Invaders

Spaced Invaders. by Paul Barber 2008. Plotting Points. Finding Slopes. Finding Y Intercepts. Line Equations. Segment Length. Determine Coordinates. Interceptor. . . . Instructions. . Target X. 0. 0. Target Y. Move amts. 0. 0. WhichSlide. 0. Use half. 0. 0. Rise. Run.

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Spaced Invaders

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  1. Spaced Invaders by Paul Barber 2008 Plotting Points Finding Slopes Finding Y Intercepts Line Equations Segment Length Determine Coordinates Interceptor    Instructions 

  2. Target X 0 0 Target Y Move amts 0 0 WhichSlide 0 Use half 0 0 Rise Run 0 0 Ships Hit 0 Y Intercept Misses 0 Ship X 0 0 Ship Y 0 0 Score 0 0 Attempts 407 Interceptor x (45) 146 0 Interceptor y Hit Flag 2 Ship Velocity calculated 19 Target Velocity Friends 0 0 Ship’s Angle 53 0 0 Target’s Angle 122 0 0 11 0 Ship Velocity 0 0 0

  3. Home Plot point (3, -2) 0 1 Try New Check Off    

  4. Home X = 473, Y = 107 X = 249, Y = 9 15 2 Ship Target Score Attempts Clear Rise   8 Y = 0.47X + -116 Try New Reset 17 Run   Fire Line Equation Slope    

  5. Home X = 347, Y = 261 X = 633, Y = 32 80 0 Ship Target Score Attempts Clear Reset 1   Y = -0.801X + 0 Try New 0   20 Fire Line Equation Y Intercept   100    

  6. Home X = 447, Y = 135 X = 589, Y = 6 3 0 Ship Target Score Attempts Clear     0 0 0 Try New   Line Equation Y Intercept 0   Fire   Reset Slope Reset    

  7. Home X = 56, Y = 208 X = 572, Y = 5 -20 2 Ship Target Score Attempts Clear Try New 1   555 Segment Length   Fire 20 Reset

  8. Home X = 465, Y = 94 ? 0 3 Ship Target Score Attempts Clear     Reset Reset Y = 0.442X + 94 197.9 Try New 0 0 Line Equation     Distance Fire X Coor. Y Coor.

  9. Home X = 395, Y = 129 X = 492, Y = 10 -50 0 Ship Target Score Attempts Clear     Reset Reset 122o 53o 19 km/s Try New 103 150   Target   Ship Target Vel. Intercept X Coor. Y Coor. Angles to Horizon 11   Ship Velocity

  10. Mission Complete -50 Your score is 0 Friendly ships hit 0 Number of misses You don't understand this do you? Mission Rating Home

  11. Home Plot point (3, -2) 0 1 Try New Check Incorrect Off     

  12. Home Plot point (-2, 1) 0 0 Check Try New Incorrect!    

  13. Back Target Missed Your Chosen Path Target’s Path Correct Intercept    

  14. Instructions The object in Plotting Coordinates is to move the circle located at the origin to the coordinates given in the box at the upper left of the screen. Use the arrows located at the lower right hand of the screen to do this. The button above these arrows toggles between whole number coordinates and ones that go by quarters. The object of Finding Slopes is to determine the correct slope in order to hit the smiley-face target. The rise over run may be changed by clicking the arrows to the left of the boxes in which the rise and run numbers appear. The new slope will be shown both in the slope box and in the equation box. The object of Finding Y Intercepts is to determine the correct Y intercept with the given slope in order to hit the target (smiley face). Use the arrows to change the value of the intercept. It will show up in the intercept box and in the equation box. The object of Line Equations is to determine the correct line equation in the slope-intercept form in order to direct a ship (not shown on the screen) to target the alien smiley-face through the point on your ship. The object of Segment Length is to determine the distance from the point on your ship to the point on the disabled ship in order to connect a tractor beam of smiley-faces. You’ll need to use the Pythagorean Theorem. The object of Determine Coordinates is to determine the target coordinates of the alien smiley face in order to hit it with your photon torpedo. You’ll need a scientific calculator with tangent, sine, and cosine ratios. Home More

  15. Home X = 409, Y = 322 X = 98, Y = 3 -2 1 Ship Target Score Attempts Clear   3 Y = 0.75X + 105 105   Try New Line Equation Y Intercept 4     Fire Reset Slope Clear missed shots. Reset Click to change the y intercept. Click to change the rise and the run. Try a new scenario. This is your ship and its gun sight is here. This is your target, a body-snatched smiley face. Friendly ships; don’t hit them. Click on these to reposition your ship.    Back 

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