<< Chapter < Page
  Wiskunde graad 8   Page 1 / 1
Chapter >> Page >

Wiskunde

Grade 8

Verhoudings en eweredigheid

Meting en vormleer

Konstruksies

Module 16

Volume en buite-oppervlakte van regte prismas

AKTIWITEIT 1

Om die volume en die buite-oppervlakte van regte prismas te ontdek en ‘n formule vir die berekening daarvan te formuleer, en die toepassing van die ontdekte formules in praktiese situasies te gebruik [LU 3.8, 4.2, 4.3, 4.5]

  • Inligting wat van nut kan wees in die uitvoer van hierdie ondersoek moet hier neergeskryf word. Jou onderwyser sal jou help om seker te maak dat die inligting korrek is, voordat jy met die ondersoek begin.

1. Skryf die formules vir die berekening van die oppervlakte en volume van elk van die volgende figure neer:

1.1 Oppervlakte van ‘n vierkant:

1.2 Oppervlakte van ‘n reghoek:

1.3 Oppervlakte van ‘n driehoek:

1.4 Oppervlakte van ‘n sirkel:

1.5 Volume van ‘n reghoekige prisma:

1.6 Volume van ‘n silinder:

2. Beskryf wat jy onder elk van die volgende verstaan en maak ‘n skets daarvan.

2.1 reghoekige prisma:

2.2 driehoekig prisma:

2.3 kubus:

2.4 silinder:

3. Wat verstaan jy onder die woord “volume”?

4. In watter standaardeenhede word die volgende gemeet?

  • volume:
  • water in ‘n dam, koeldrank in ‘n bottel:

5. Bestudeer die volgende voorstellings van nette.

5.1 reghoekige prisma:

5.2 driehoekige prisma (dit is nie ‘n regte piramide nie):

Assessering

LU 3
Ruimte en VormDie leerder is in staat om eienskappe van en verwantskappe tussen twee- dimensionele vorms en drie-dimensionele voorwerpe in ’n verskeidenheid oriënta-sies en posisies te beskryf en voor te stel.
Assesseringstandaarde(ASe)
3.3 gebruik woordeskat om parallelle lyne te beskryf wat deur ’n dwarslyn, loodlyne en snylyne gekruis word, asook driehoeke na aanleiding van hoekverwantskappe (bv. vertikaal teenoorstaande, ooreenkomstig);3.4 gebruik ’n passer, liniaal en gradeboog om meetkundige figure akkuraat te konstrueer sodat spesifieke eienskappe ondersoek en nette ontwerp kan word;3.5 ontwerp en gebruik nette om modelle te maak van meetkundige driedimensionele voorwerpe wat tot en met hierdie graad bestudeer is;3.7 gebruik proporsie om die uitwerking van vergroting en verkleining op die eienskappe van meetkundige figure te beskryf;3.8 teken en interpreteer sketse van meetkundige driedimensionele voorwerpe vanuit verskillende perspektiewe, met aandag aan die behoud van eienskappe.
LU 4
MetingDie leerder is in staat om gepaste meeteenhede, -instrumente en formules in ’n verskeidenheid kontekste te gebruik.
Dit is duidelik wanneer die leerder:
4.1 los ingewikkelder probleme op wat tyd behels, insluitend die verhouding tussen tyd, afstand en spoed;4.2 los probleme op wat die volgende behels:4.2.1 lengte;4.2.2 omtrek en oppervlakte van veelhoeke en sirkels;4.2.3 en volume en buite-oppervlakte van reghoekige prismas silinders.
4.3 los probleme op deur ’n verskeidenheid strategieë te gebruik, insluitend:4.3.1 skatting;4.3.2 berekening tot minstens twee desimale plekke;4.3.3 die gebruik en omskakeling van toepaslike SI eenhede;
4.5 bereken die volgende deur die geskikte formulas te gebruik:4.5.1 omtrek van veelhoeke en sirkels;4.5.2 oppervlakte van driehoeke, reghoeke, sirkels en veelhoeke deur ontbinding tot driehoeke en reghoeke;4.5.3 volume van prismas met driehoekige en reghoekige basisse en silinders.
4.7 skat, vergelyk, meet en teken hoeke met ’n gradeboog, akkuraat tot een graad.

Memorandum

AKTIWITEIT 1

  • 2
  • ℓ × b
  • 1 2 size 12{ { {1} over {2} } } {} × b × size 12{ ortho } {} h
  • π size 12{π} {} r 2
  • ℓ × b × h
  • π size 12{π} {} r 2 h

2. Leerders voorsien.

3. Inhoud

  • ℓ / mℓ / kℓ / cm 3 / mm 3 ens.
  • kℓ / ℓ / mℓ

Questions & Answers

what does preconceived mean
sammie Reply
physiological Psychology
Nwosu Reply
How can I develope my cognitive domain
Amanyire Reply
why is communication effective
Dakolo Reply
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
Wekolamo Reply
please i need answer
Wekolamo
because it helps many people around the world to understand how to interact with other people and understand them well, for example at work (job).
Manix Reply
Agreed 👍 There are many parts of our brains and behaviors, we really need to get to know. Blessings for everyone and happy Sunday!
ARC
A child is a member of community not society elucidate ?
JESSY Reply
Isn't practices worldwide, be it psychology, be it science. isn't much just a false belief of control over something the mind cannot truly comprehend?
Simon Reply
compare and contrast skinner's perspective on personality development on freud
namakula Reply
Skinner skipped the whole unconscious phenomenon and rather emphasized on classical conditioning
war
explain how nature and nurture affect the development and later the productivity of an individual.
Amesalu Reply
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
Zyryn Reply
good👍
Jonathan
and having a good philosophy of the world is like a sandwich and a peanut butter 👍
Jonathan
generally amnesi how long yrs memory loss
Kelu Reply
interpersonal relationships
Abdulfatai Reply
What would be the best educational aid(s) for gifted kids/savants?
Heidi Reply
treat them normal, if they want help then give them. that will make everyone happy
Saurabh
What are the treatment for autism?
Magret Reply
hello. autism is a umbrella term. autistic kids have different disorder overlapping. for example. a kid may show symptoms of ADHD and also learning disabilities. before treatment please make sure the kid doesn't have physical disabilities like hearing..vision..speech problem. sometimes these
Jharna
continue.. sometimes due to these physical problems..the diagnosis may be misdiagnosed. treatment for autism. well it depends on the severity. since autistic kids have problems in communicating and adopting to the environment.. it's best to expose the child in situations where the child
Jharna
child interact with other kids under doc supervision. play therapy. speech therapy. Engaging in different activities that activate most parts of the brain.. like drawing..painting. matching color board game. string and beads game. the more you interact with the child the more effective
Jharna
results you'll get.. please consult a therapist to know what suits best on your child. and last as a parent. I know sometimes it's overwhelming to guide a special kid. but trust the process and be strong and patient as a parent.
Jharna
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Wiskunde graad 8. OpenStax CNX. Sep 11, 2009 Download for free at http://cnx.org/content/col11033/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Wiskunde graad 8' conversation and receive update notifications?

Ask