What number minus 6 by 19 17 + 13 = 19 which should bode find some - more complex mahoni form: Fill

community has introduced many innovative teachers experience Prize worth applying to the school level many teachers aim to exchange, learn, modify to suit your specific mahoni unit. in this issue every applicant for a SKKN launch used good in school Ms. Duong Thi Thu. Primary School Teacher Ngoc Ha - Ba Dinh with the subject "Development of practical mahoni skills in calculus Grade 3 mathematics". Ms. Duong Thi Thu achieved good teacher in the district for many years taught students at the field of mathematics, there are many state SKKN winning author has employed innovative ways of teaching and encourage students unique grasp of thinking mahoni to understand how the math. ask the community following a brief introduction by the author SKKN:
1. Launched SKKN Learning and solving math placement time critical mahoni elementary math facts, so students need to learn and have been learning methods and the methods of doing so learn different mahoni math student needs to be done to expand the calculation skills, problem-solving methods applied in an interesting manner fastest, or the most proficient form the habit of thinking and appearance and intelligence for children. 2. Initiative peak work experience helps students quickly calculate accurately, create habits for students noticed comparing commented before finding explained by the type of award and know a lot more quickly, or better. From that desire and students interested in math. 3. SKKN Based on the idea of writing a basic knowledge students already possess, lauching the math teacher from easy not easy to match the offer qualified students the thinking mathematically abstract requirements associated to allow outdoor mahoni games help students acquire a knowledge of its flexible, mahoni since it appears the thinking of students such as form filling exercise First some simple homework students 17 + = 20 When students have solve all the other teachers give 17 + .......... -6 = 13 in this post we look backward from the results mahoni go up
What number minus 6 by 19 17 + 13 = 19 which should bode find some - more complex mahoni form: Fill in the blanks some general purpose cell numbers at 3 linked together by 20
Comment mahoni 3 numbers at the box adjacent the first time with the number 2 3 contiguous cells are the same as the number 5,6,9 is repeated. Since then, some students find the last cell type in many exercises fast fast charge The expression results 1-2 + 3-4 + 5-6 + 7-8 + 9 = Distance 1: students mahoni must take graft all the numbers added together and bring together unless: (1 +9) + (3 +7) - (2 +8) - (4 +6) + 5 = 10 + 10-10 - 10 + 5 = 20 - 20 + 5 = 5 type 2. pupils find surely result in the type (9-8) + (7-6) + (5-4) + (3-2) + 1 = 1 + 1 + 1 + 1 + 1 = 5 The expression values +12 18 x 3 x 3 = way 1: find student attention results in the usual way (previous marriage, plus the following) 18 x 3 + 12 x 3 = 54 + 36 = 90 type 2: 18 x 3 + 12 x 3 = 3 x (18 + 12) = 3 x 30 = 90 times the teaching of expression outside the work helps students master the property valuation principles expression, teachers also make students reinforce mental math skills to figure out how the affordable solution to the comparison, allowing commented Checked results. more specific training on the expression values eg 1 expression (421-200) x 2 = Once students have found a result, teachers have students commented regulations see spreads calculated in parentheses unremarkable Quick Search mahoni by type of results in order to: Get 400-200 = 200 left tens and units remain So: 421 -200 = 221 Expression 2: 90 + 9: 9 = 90 + 9 Have you taken = 99 99: 9 = 11 Doing so right or wrong? Why? Students Doing so is wrong for public expression and to make split front split, plus the following: launch 2 expression: 48 x 4: 2 = & #