Robert Lee Morton

1889

• Making sure of arithmetic, 1-8
• Teaching arithmetic in the elementary school
• The florist's manual
• Factors affecting the ability of pupils to solve verbal problems in arithmetic...
• Foundations of secondary school mathematics
• Helping children learn arithmetic
• Making sure of arithmetic
• Matemaṭiḳah ḥadashah
• Modern arithmetic through discovery
• Modern mathematics through discovery
• Teacher's guide to accompany Making sure of arithmetic
• Teaching arithmetic in the primary grades