Top Tweets for #CodingForKids

This is how you implement turtle graphic Forward command: Calculate x1, y1 given x0,y0, distance(N), and heading(Angle). Draw line with color P. Assume 0° is North (math 0° is East) X1=X0 + N×sin(A) Y1=Y0 + N×cos(A) Watch out for screen coordinates: Y1=Y0 - N×cos(A) Then draw the line if not transparent: If (P) Line X0,Y0,X1,Y1,P Update points X0=X1; Y0=Y1; The most difficult part is this part. Therefore, the core of turtle graphic program is merely the conversion from polar coordinates to Cartesian coordinates. The rest is user interface. #sketchnote #STEAM #LearnToCode

So, I have a story for this. Of the 4 turtle graphic functions Forward, Turn Left, Turn Right, and Pen Color, I tell people that this is so easy, that I will implement 3 of the 4 functions. They only have to implement 1 function so they should be able to do it faster than me. Then I implement: TL: heading -= N TR: heading += N PC: P=N 30 seconds, and how about you? How fast can you implement FD? 🤣 #CodingForKids #STEM