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Mathematics

Meet bonny and tommy

Educator section

Memorandum

Learners must know the words “horizontal” and “vertical” and know what they mean.

Make sure that the learners understand the role of the nought (0) as a placeholder in numbers without units, like 10, 20, 30, 40 etc. This is particularly important for vertical operations.

Leaner section

Content

Activity: numbers [lo 1.10, lo 1.8, lo 2.2, lo 1.6]

  • Use the number line and fill in 3 places after:
  • Fill in 2 places before:
LO 1.10
  • Compare the numbers with each other:
  • Bonny and Tommy want to write their sums in a different way.
LO 1.8

Complete the patterns:

Do the same with:

LO 2.2
  • Bonny says: it is much easier to work with numbers if you separate the tens and the units.

She renames the numbers, e.g. 36 = 30 + 6

  • Tommy says: sometimes you have to group the numbers differently after you have separated them.

He then regroups the numbers, e.g. 30 + 6 = 20 + 10 + 6

Rename Regroup

34 = 30 + 4 = 20 + 10 + 4

28 = _____ + _____ = _____ + 10 + 8

46 = _____ + _____ = _____ + 10 + 6

39 = _____ + _____ = _____ + _____ + _____

23 = _____ + _____ = _____ + _____ + _____

55 = _____ + _____ = _____ + _____ + _____

  • Put the tens and units back together again:

30 + 10 + 1 = 40 + 1 = 41

20 + 10 + 7 = _____ + _____ = _____

1 0 + 10 + 2 = _____ + _____ = _____

40 + 10 + 9 = _____ + _____ = _____

30 + 10 + 6 = _____ + _____ = _____

20 + 10 = 5 = _____ + _____ = _____

LO 1.10
  • Bonny and Tommy go to the store. Bonny has R5 and Tommy has R6. On the shelf there are cookies and chocolates that they want to buy.

  • How many cookies can Bonny buy for her R5?

__________________________ cookies. Draw them.

  • How many chocolates can Tommy buy for his R6?

__________________________chocolates. Draw them.

LO 1.6

Assessment

Learning Outcome 1: The learner will be able to recognise, describe and represent numbers and their relationships, and to count, estimate, calculate and check with competence and confidence in solving problems.

Assessment Standard 1.6: We know this when the learner solves money problems involving totals and change in rands and cents, including converting between rands and cents.

Assessment Standard 1.8: We know this when the learner can perform calculations, using appropriate symbols, to solve problems involving:

1.8.1 addition and subtraction of whole numbers with at least 3 digits;

1.8.2 multiplication of at least whole 2-digit by 1-digit numbers;

1.8.3 division of at least whole 2-digit by 1-digit numbers;

  • estimation;

Assessment Standard 1.10: We know this when the learner uses the following techniques:

1.10.1 building up and breaking down numbers;

1.10.2 doubling and halving;

1.10.3 number-lines;

1.10.4 rounding off in tens.

Learning Outcome 2: The learner will be able to recognise, describe and represent patterns and relationships, as well as to solve problems using algebraic language and skills.

Assessment Standard 2.2: We know this when the learner copies and extends simple number sequences to at least 1 000.

Questions & Answers

what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Mathematics grade 3. OpenStax CNX. Oct 14, 2009 Download for free at http://cnx.org/content/col11128/1.1
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