Presentation on theme: "Logic and Reasoning: Examples and Non-Examples Rebecca Boutte Cobb 6 th Grade Campus Galena Park I. S. D."— Presentation transcript:
Logic and Reasoning: Examples and Non-Examples Rebecca Boutte Cobb 6 th Grade Campus Galena Park I. S. D.
Objective TEKS 6.13 A -
Comparing Let’s play a game of concentration. Click on the link below. This game will get you to concentrate on making comparisons. il.aspx?id=73http://illuminations.nctm.org/tools/tool_deta il.aspx?id=73
Examples and Non-Examples Now that you’re an expert at making comparisons, let’s get started! We will be making comparisons, noting similarities and differences of characteristics in the “Example and Non-Example” activities that follow.
What makes it a Griddle? Let’s examine the figures in the table that follow. What characteristic do these figures have in common?
Examples & Non-Examples These are Griddles These are not Griddles
You’re Right! Griddles are four- sides polygons (quadrilaterals). The non- examples do not have four sides.
What makes it a Tagamond? Let’s examine some more figures in a table. What characteristic do these figures have in common?
Examples and Non-Examples TagamondsNot Tagamonds
Great Observation! Tagamonds are three- dimensional figures or solids. The other figures are two- dimensional. 3–D Glasses
Examples and Non-Examples Kuros Not Kuros
Way to Go! Kuros are prime numbers.
Examples and Non-Examples Quizzlers 6 and and and and 75 Not Quizzlers 2 and 8 10 and and 30 7 and 28
Did you figure this one out? Quizzlers have a first number that when multiplied by 3 will give you the second number. In other words, the first number must be a factor of the second number and a multiple of 3. Factor x 3 = a multiple of 3
Examples and Non-Examples Quizzlers 6 x 3 = x 3 = x 3 = x 3 =75 Not Quizzlers 2 x 4 = 8 10 x 5 = x 2 = 30 7 x 4 = 28
Examples and Non-Examples Zingers Not Zingers
Did you get this one? Zingers are divisible by 3. (Multiples of 3). Remember the divisibility rule! If the sum of the digits is divisible by 3 then the number is divisible by = 6; so 51 is divisible by 3.
Your Turn! Work with a partner to create your own “Example/Non- Example” problem. Remember, items under the Example column must share a common characteristic.