# Science and Maths Presentation Essay

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Lecturing Does Not = Learning Have you ever experienced the glazed look in your students’ eyes when lecturing? Do you observe them taking copious notes and not really paying attention to you as you talk or place notes for them to copy on the overhead, chalk board, Also, this delivery method provides students limited time to make sense and formulate questions regarding new information, i.e., they do not have time to assimilate the information or make connections. Impact of Lecturing Lectures result in a one-way transfer of knowledge that does not pass through your students brains. It goes straight from your mouth to their pen or pencil onto paper — passing go (the brain), proceeding directly to a potentially never opened notebook. Through your best efforts to teach the important concept(s) in a lesson, they have learned little and typically cannot apply the information. This is why traditional home work is frustrating and viewed as a waste of time by most students. Typically, students do not remember enough from class to complete their homework assignments. 1. The 11 Times Trick We all know the trick when multiplying by ten – add 0 to the end of the number, but did you know there is an equally easy trick for multiplying a two digit number by 11? This is it: Take the original number and imagine a space between the two digits (in this example we will use 52: 5_2 Now add the two numbers together and put them in the middle: 5_(5+2)_2 That is it – you have the answer: 572. If the numbers in the middle add up to a 2 digit number, just insert the second number and add 1 to the first: 9_(9+9)_9 (9+1)_8_9 10_8_9 1089 – It works every time. 2. Quick Square If you need to square a 2 digit number ending in 5, you can do so very easily with this trick. Mulitply the first digit by itself + 1, and put 25 on the end. That is all! 252 = (2x(2+1)) &amp; 25 2 x 3 =