### 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

Smiley Face Animation
Problem Statement:
The pre-placed blocks will set the background color with the featureless face. Add blocks to add the following features to the face: eyebrows, eyes, mouth, and nose. After adding the features, use a loop to create an animation that shows that action of smiling and raising eyebrows.
```/* Code generated by RoboBlockly v2.0 */
#include <chplot.h>
double i;
CPlot plot;

for(i = 1; i <= 10; i++) {
plot.backgroundColor("#00cccc");
plot.noStrokeColor();
plot.fillOpacity(0.5);
plot.fillColor("white");
plot.ellipse(6, 6, 16, 20, 0);
plot.fillOpacity(1);
plot.fillColor("black");
plot.circle(3, 6, 0.7);
plot.circle(9, 6, 0.7);
plot.strokeColor("#666666");
plot.arc(3, 6 + i * 0.12, 2, 50, 150);
plot.arc(9, 6 + i * 0.12, 2, 30, 130);
plot.arc(6, 4, 5, 260 - i * 3, 280 + i * 3);
plot.noFill();
plot.bezier(6, 5, 6, 4, 9, 1, 6, 1);
plot.grid(PLOT_OFF);
delaySeconds(0.03);
}

plot.axisRange(PLOT_AXIS_XY, -12, 24);
plot.ticsRange(PLOT_AXIS_XY, 6);
plot.sizeRatio(1);
plot.plotting();```
 Blocks Save Blocks Load Blocks Show Ch Save Ch Workspace
Problem Statement:
The pre-placed blocks will set the background color with the featureless face. Add blocks to add the following features to the face: eyebrows, eyes, mouth, and nose. After adding the features, use a loop to create an animation that shows that action of smiling and raising eyebrows.

Time