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The plus sign (+) is a binary operator that indicates addition, as in 2 + 3 = 5. It can also serve as a unary operator that leaves its operand unchanged (+ x means the same as x ). This notation may be used when it is desired to emphasize the positiveness of a number, especially in contrast with the negative numbers (+5 versus −5).
JumpStart (known as Jump Ahead in the United Kingdom) is an educational media franchise created for children, primarily consisting of educational games.The franchise began with independent developer Fanfare Software's 1994 video game JumpStart Kindergarten.
Frobenius coin problem with 2-pence and 5-pence coins visualised as graphs: Sloping lines denote graphs of 2x+5y=n where n is the total in pence, and x and y are the non-negative number of 2p and 5p coins, respectively. A point on a line gives a combination of 2p and 5p for its given total (green).
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[26] [28] If all the numbers are used and no one gets three numbers that add up to 15 then the game is a draw. [26] Plotting these numbers on a 3×3 magic square shows that the game exactly corresponds with tic-tac-toe, since three numbers will be arranged in a straight line if and only if they total 15.
Mathematics lessons may include writing, drawing, games, and instruction with manipulatives rather than filling out worksheets. [ 4 ] Lessons may include exploration of concepts allowing students to invent their own procedures before teaching standard algorithms.