![]() K.OA.A.5 Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. K.OA.A.4 Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. K.OA.A.3 Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. ![]() K.OA.A.2 Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. K.OA.A.1 Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. K.CC.B.5 Count to Tell the Numbers of Objects K.CC.B.4 Count to Tell the Number of Objects K.CC.A.2 Know number names and the count sequence. K.CC.A.1 Know number names and the count sequence. + Includes 100 1-cm cubes, 10 10x1x1-cm rods, 10 10x10x1-cm squares, 1 10x10x10-cm cube, 5 activity cards, plastic storage box + Durable plastic for long-term use and easy cleaning + Also develops skills in spatial intelligence and fine motor skills ![]() + Used to teach the base ten concepts, the decimal system, area, volume, and basic mathematical operations + A set of 121 plastic connecting blocks representing 2,200 units (1 cubic centimeter each) Kids First Math: Base Ten Blocks Math Kit with Activity Cards Now, we are bringing this experience to the Kids First Math line, a series of nine hands-on kits with activity cards or lesson guides designed to demonstrate and teach concepts in mathematics, as well as other skills such as logical thinking, problem solving, and creative thinking. Thames & Kosmos has a long history of incorporating this principle into science education. The sample worksheets below provide further examples of subtraction and division.īase 10 Blocks- Subtraction Sample Worksheetīase 10 Blocks- Division Sample Worksheetīase ten blocks, and the icons that represent them, may be the most important manipulatives in support of the elementary math curriculum.Time after time, experience shows that learning by manipulating physical objects with one’s own hands - learning by doing things firsthand, rather than being told about them or reading about them in a book - is extremely effective. Similar activities in Working with Base Ten Blocks support this same idea with all 4 operations (addition, subtraction, multiplication and division) with 2-, 3- and 4-digit numbers. Here is a simple example of how those icons are used to build understanding: Children are taught to represent 48 by drawing 4 lines and 8 dots and to represent 25 by drawing 2 lines and 5 dots and then to use their drawings to support base ten counting and adding tens to tens and ones to ones. Here is what those icons look like representing the number 2,352. That idea is that base ten blocks-the thousand block, the hundred block, the ten block and the one block-can be represented by icons (cubes, squares, lines and dots respectively) that children can draw and use for paper and pencil computational activities. In addition to these two foundational ideas, there is a third big idea that is important for children to understand. They can “add tens to tens, ones to ones, and exchange”: 4 tens blocks and 2 tens blocks is 6 tens blocks 8 ones and 5 ones is 13 ones 13 ones is 1 ten and 3 ones, so altogether I have 7 tens blocks and 3 ones blocks or 73.
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