Transcriber's Note
Missing or damaged punctuation has been repaired.
Book 1.
Page 86: 11.: 'stich' corrected to 'stitch'.
"Stitch! stitch! stitch!"
Page 87: 42.: '10,000' corrected to '10,100'.
"Arithmetic!: 202 x 50 = 10,100"
Page 91: 123.:
123.
| { | √(60 - 302) = 51.96152 √(60 - 402) = 44.72136 | } |