Numbers and their relations

• Let's Learn the First numbers! 1:40
• The Numeric System 3:59
• Series and Scales 3:00
• Numbers: smaller, larger or equal 5:14
• The tens 2:20
• The hundreds 4:54
• Numbers Positional Value 3:13

Arithmetic Operations

• Addition 3:13
• Substraction 2:27
• Math problems with addition and subtraction 2:30
• Example with addition and subtraction 5:00
• Location in Space 5:00