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Showing posts with the label Mental Math Resource

Mental Math and Subitizing

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One of the math outcomes I need to cover for my Primary students is: N02 Students will be expected to recognize, at a glance, and name the quantity represented by familiar arrangements of 1 to 5 objects or dots. Performance Indicators N02.01 Look briefly at a given familiar arrangement of 1 to 5 objects or dots and identify the number represented without counting. N02.02 Identify the number represented by a given dot arrangement on a five-frame. This outcome works on subitizing.  Subitizing  is the ability to recognize, at a glance, a quantity of objects, without one-to-one counting. I work on this every day with my students during our mental math work.   I have made dot combination plates on paper that I print out and laminate and I also use PowerPoint presentations.  My students respond in a few ways: with fingers, with number cards I have provided them and/or using a whiteboard to write the number down.  I start off with the lower numbers and work my way up

Ultimate Dot Paper Plate Collection

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As I said in an earlier post, anyone who teaches grade Primary to Grade Three in Nova Scotia will be executing a new math curriculum.  And one of the big ideas is subitizing which is the ability to recognize at a glance a quantity of objects without counting.  Dot paper plates are always used but I find they take up so much space.  So I wanted to create something that didn't really take up that much space and that I could laminate (which I love doing) so it would last and be protected especially in a primary classroom.  This is just like my new five frame paper plate product but this product has various dot arrangements on a picture of a paper plate.   This product has various dot combinations of the numbers 1 – 5 on a picture of a paper plate which you can print on cardstock and laminate.  I like to print the dot paper plates on both sides of the cardstock to save paper and be more efficient.  I came up with the following dot plate combinatio

Five Frame Comparison Plates

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For the 2013-2014 school year, anyone who teaches grade Primary to Grade Three in Nova Scotia will be executing a new math curriculum.  The Manitoba Education, the New Brunswick Department of Education and the Western and Northern Canadian Protocol (WNCP) for Collaboration in Education allowed the Nova Scotia Department of Education and Early Childhood Education to adapt their mathematics curriculum to develop our new guide. So I am in the process of learning the new outcomes and developing new materials that will be useful in my classroom and with this new curriculum. One of the big ideas in the new curriculum is subitizing which is the ability to recognize at a glance a quantity of objects without counting (really not new but there will be more of an emphasis).   Most use paper plates with the dot stickers on them but I wanted to try something different, would last longer and take up less space (because if your classroom is anything like mine there is a lot of stuff).