### Learning Math and Coding with Robots

 Grid: Tics Lines: Width px Hash Lines: Width px Labels: Font px Trace Lines: Robot 1: Width px Robot 2: Width px Robot 3: Width px Robot 4: Width px
 Axes: x-axis y-axis Show Grid Grid: 24x24 inches 36x36 inches 72x72 inches 96x96 inches 192x192 inches Quad: 4 quadrants 1 quadrant Hardware Units: US Customary Metric
 Background:

#### Robot 1

 Initial Position: ( in, in) Initial Angle: deg Current Position: (0 in, 0 in) Current Angle: 90 deg Wheel Radius: 1.75 in1.625 in2.0 in Track Width: in

#### Robot 2

 Initial Position: ( in, in) Initial Angle: deg Current Position: (6 in, 0 in) Current Angle: 90 deg Wheel Radius: 1.75 in1.625 in2.0 in Track Width: in

#### Robot 3

 Initial Position: ( in, in) Initial Angle: deg Current Position: (12 in, 0 in) Current Angle: 90 deg Wheel Radius: 1.75 in1.625 in2.0 in Track Width: in

#### Robot 4

 Initial Position: ( in, in) Initial Angle: deg Current Position: (18 in, 0 in) Current Angle: 90 deg Wheel Radius: 1.75 in1.625 in2.0 in Track Width: in

Use Fractions to Draw a Face
Problem Statement:

The pre-placed blocks will draw the ellipse to provide the shape of the face. Add more blocks to draw features at the appropriate locations. The eyes will be circles that are located on the red line, which is located halfway down the face. The bottom of the nose will touch the green line, 3/4 of the way down the face. The bottom of the smile will touch the mouth line, 7/8 of the way down the face.

```/* Code generated by RoboBlockly v2.0 */
#include <chplot.h>
CPlot plot;

plot.backgroundColor("#66cccc");
plot.noStrokeColor();
plot.fillColor("white");
plot.fillOpacity(0.5);
plot.ellipse(12, 12, 13, 16, 0);
plot.fillOpacity(1);
plot.fillColor("#330000");
plot.circle(10, 12, 0.5);
plot.circle(14, 12, 0.5);
plot.strokeColor("#330000");
plot.line(12, 11, 13.5, 8.3);
plot.arc(12, 12, 4, 265, 293);
plot.arc(12, 12, 6, 250, 300);
plot.grid(PLOT_OFF);

plot.axisRange(PLOT_AXIS_XY, 0, 24);
plot.ticsRange(PLOT_AXIS_XY, 2);
plot.sizeRatio(1);
plot.plotting();```
 Blocks Save Blocks Load Blocks Show Ch Save Ch Workspace
Problem Statement:

The pre-placed blocks will draw the ellipse to provide the shape of the face. Add more blocks to draw features at the appropriate locations. The eyes will be circles that are located on the red line, which is located halfway down the face. The bottom of the nose will touch the green line, 3/4 of the way down the face. The bottom of the smile will touch the mouth line, 7/8 of the way down the face.

Time