Build strong number sense in a fun and engaging way with subitizing to 10 activity. This WODB (Which One Doesn't Belong) Slideshow is a fantastic quick warm-up or assessment activity for developing number sense through subitizing. Students will love the instant feedback from the cute spring characters!Subitizing is the ability to instantly recognise a quantity without counting! It is an essential skill in the development of early number sense and also helps students to see that numbers can be co