Open-ended maths activities: Using ‘good’ questions to enhance learning in Mathematics. Revised Ed (Peter Sullivan & Pat Lilburn, 2017)
							
					
															Open-ended maths activities: Using ‘good’ questions to enhance learning in Mathematics. 2nd Ed (Peter Sullivan & Pat Lilburn, 2005)
							
					
															The Origo handbook of mathematics education (Origo Education, 2007)
							
					
															
				