Two-Digit: Addition and Subtraction: What Works?

1991 ◽  
Vol 38 (5) ◽  
pp. 10-13
Author(s):  
Frances Thompson
Keyword(s):  
Second Grade ◽  
Real Problem ◽  
The Real ◽  
What Works ◽  
Addition And Subtraction ◽  
Subtraction Facts

Students are introduced to two digit addition and subtraction during the second grade. This is their first encounter with the idea of regrouping in computation. Previous computation has been with singledigit numerals in the basic addition and subtraction facts. Much groundwork is necessary in numeration before students are introduced to twodigit computation. Students must have an understanding of how tens and ones are related in our base-ten notation. They need many varied experiences involving regrouping 10 ones for 1 ten or changing 1 ten for 10 ones before an algorithm is even introduced. But how to introduce the addition and subtraction algorithms effectively is the real problem.

Learning Strategies for Addition and Subtraction Facts: The Road to Fluency and the License to Think

2004 ◽  
Vol 10 (7) ◽  
pp. 362-367
Author(s):  
Lisa Buchholz
Keyword(s):  
Learning Strategies ◽  
First Grade ◽  
Second Grade ◽  
First Year ◽  
Mental Computation ◽  
The Road ◽  
Finger Counting ◽  
Addition And Subtraction ◽  
Basic Facts ◽  
Subtraction Facts

Teaching the basic facts seemed like the logical thing to do. Wouldn't a study of the basic facts make mathematics computation much easier for my students in the future? How could I help my students memorize and internalize this seemingly rote information? How could I get rid of finger counting and move on to mental computation? As I embarked on my first year of teaching second grade following many years of teaching first grade, these questions rolled through my head.

Discounting and the Paradox of the Indefinitely Postponed Splurge

2018 ◽  
Author(s):  
Matthew Rendall
Keyword(s):  
Real Problem ◽  
Costs And Benefits ◽  
The Real ◽  
Reductio Ad Absurdum ◽  
The World ◽  
The Future ◽  
End Of The World

It is sometimes argued in support of discounting future costs and benefits that if we gave the same weight to the future as to the present, we would invest nearly all our income, but never spend it. Rather than enjoying the fruits of our investments, we would always do better to reinvest them. Undiscounted utilitarianism (UU), so the argument goes, is collectively self-defeating. This attempted reductio ad absurdum fails. Regardless of whether each generation successfully followed UU, or merely attempted to follow it, we could never get trapped in endless saving. The real problem is different: without the ability to foresee the end of the world, UU cannot tell us how much to save. Discounting is a defensible response, but only when coupled with a rule against risking catastrophe.

Mathematics the Real Problem of the Teacher

1917 ◽  
Vol 85 (9) ◽  
pp. 237-242
Author(s):  
Idella R. Berry
Keyword(s):  
Real Problem ◽  
The Real

Rediscovering Hope Building School Cultures of Hope for Children of Poverty

2011 ◽  
Vol 93 (3) ◽  
pp. 44-47 ◽  
Author(s):  
Kevin Sheehan ◽  
Kevin Rall
Keyword(s):  
Academic Skills ◽  
Real Problem ◽  
School Cultures ◽  
The Real ◽  
Life Conditions

The real problem for children of poverty may not be weak academic skills, poor teachers, or scant resources, but a lack of hope that they can alter their life conditions through effort.

scholarly journals PASANG SURUT DAN FRAGMENTASI POLITIK ISLAM DI INDONESIA

Dialog ◽  
2017 ◽  
Vol 34 (2) ◽  
pp. 26-43
Author(s):  
Miftahussurur Miftahussurur
Keyword(s):  
Social Economy ◽  
Political Islam ◽  
Political Context ◽  
The Political ◽  
Real Problem ◽  
Historical Process ◽  
The Real ◽  
Basic Need

This descriptive­analytics article is aimed to trace­back the dynamics and fragmentation of political Islam in Indonesia. It focuses on relation between the dynamics of political Islam and its historical process and its social-political context. After reformation era, the power of political Islam in Indonesia has been getting highly and more fragmented. Rather, the fragmentation was seemingly caused by interest of elites than ideology dispute. It was the reason why the power of political Islam has been never unified, even to boost the people’s interest. The political Islam tended to struggle enforcing God’s law (syariah) rather than solving the real problem such as economy and basic need of society or ummah. In the fact, enforcing the Syariah law was merely artificial one. Finally, the political Islam always fails in transforming social, economy and politics due to its elitism.

Sign in / Sign up

Export Citation Format

Share Document