Hyperlinks Aliens inverses [ppt 156KB] Bar model for subtraction [pptx 97KB] Counting ideas [doc 26KB] difference and take away on a number line [ppt 125KB] generalisation [ppt 200KB] SAN for Division [doc 32KB] Subtraction counters [pptx 332KB] Subtraction exchanging [pptx 326KB] Subtraction models [pptx 286KB] Written division explanation [pptx 70KB]