Use these fun Halloween subitizing cards by flashing a quick look to students. A quick look is when you display the card to the students for about 5-8 seconds depending on their experience with this practice. Have students independently come up with the number of objects they saw on the card. When they have their number have them fold their hands or put their hand on their heart. This gives the teacher a visual of who is ready to discuss. When most students have displayed they are ready to discuss ask multiple students how many items they saw displayed on the card and how they saw the items.