Mathematics From Belinda Haley and Cheryl Barker, Mathematics Steering Committee
Understanding the strategies of Ann Baker’s Secret Code Chunking For Addition (ch) The Chunking strategy is used to make mental addition easier. Numbers are broken down into smaller place value ‘chunks’, so having a good understanding of place value is necessary. To add 46 and 37, separate the tens and ones, as shown below. Then, add the tens together and then the ones. Finally, add the tens total to the ones total to get the answer.
46 + 37 40 + 30 70
6+7 +
13
83 The process seems long when shown step-by-step, but when this is done mentally, it is quite efficient.
Chunking For Subtraction (ch) The same Chunking strategy can be used to make mental subtraction easier, as shown below. The example in the second box shows what happens when you get a negative number. When you add a negative number, it is the same as subtracting.
96 – 54 90 – 50 40
84 – 57
6–4 + 42
2
80 – 50 30
4–7 +
-3
27
Ideas to Use at Home Choose a three-digit number without repeating any digit and without using zero, for example 381. You reverse the order of the digits to create a second number, in this case 183. The child subtracts the smaller number from the larger and records this as a number sentence. The answer is used to start another reversal subtraction. Play continues until zero is reached. The process could be repeated for other threedigit numbers. Encourage your child to use the chunking strategy throughout. Use online maths games. In this world of technology kids are keen to learn online as the feedback can be instantaneous. There are numerous sights suitable for children learning subtraction at school with concepts being reinforced through games. This UK website is a great start http://resources.woodlands-junior.kent.sch.uk/maths/interactive/index.htm http://resources.woodlands-junior.kent.sch.uk/maths/interactive/subtraction.htm http://naturalmaths.com.au
child help you decide if they are correct. Repeat the activity with 6 and 8 objects. Observe Your Child. Focus on Mathematical Practice 5. Use appropriate tools ...
14 may. 2012 - ... portales corporativos y empresariales http://www.mtv.co.uk .... descentralizada: Drupal.org, Drupal. España y grupo local de Drupal Sevilla:.
2600 (voice or TDD). If you require information about this program, activity, or facility in a language other than English, contact the USDA agency responsible for ...
It also tells you where to get the services you will need after high school. ... Section 7: Information Sharing with Health and Human Services Agencies and ...
13 ago. 2018 - Utilizzare sempre per la calibrazione tamponi nuove pH o Redox DuraCal da Hamilton. Conservazione dell'elettrodo. Gli elettrodi dovrebbero ...
http://urlzz.org/alvaroaa04/pdx/11b2p2am/ Tags: download, full ebook 101 cerita ... quicktime windows 7 64 bit,12 years a slave movie download with subtitles ...
PQ is organized and funded by the Ministry of Culture of the ..... In the last decade, the Prague Quadrennial has .... records of the invisible and fantastic interior.
Installer l'abat-jour en le plaçant sur la ampoule. Répétez les étapes 3 à 5 pour les douilles restants. Reportez-vous aux instructions pour supplément clos ...
16 sept. 2019 - e) All'installazione dell'elettrodo, l'etichetta ATEX / IECEx deve essere attaccata al cavo ...... 4970 Energy Way. Reno, Nevada 89502 USA.
7 may. 2018 - School para empresas sociales en fase de crecimiento. ...... on the website www.momentum.bbva.com (this includes notifications that inform ...
PQ is organized and funded by the Ministry of Culture of the ..... In the last decade, the Prague Quadrennial has ..... awakening of public consciousness. After the ...
14 mar. 2016 - the way the activities of the Pestalozzi Programme influenced the ... which are realised as mentally exhausting by the teacher as well as by the.