<< Chapter < Page Chapter >> Page >

Natuurwetenskappe

Graad 5

Lewe en leefwyse

Module 2

Voortplanting deur sade

Aktiwiteit:

Om plante se voortplanting deur sade te ondersoeke

[lu 1.1, 1.2, 1.3, 2.3]

Voortplanting deur sade

Het jy al ooit gewonder hoekom ‘n plant sade vorm?

Opdrag:

Versamel soveel verskillende sade as moontlik (van blomme, bome, grasse, onkruide en wildebome) en plak dit in die oop spasies hieronder. Ruil met 'n vriend uit sodat jy 'n verskeidenheid het. Skryf die name van die sade onderaan, indien jy dit ken!

Probeer nou die volgende:

Kry agt boontjiesade en vier houers. Plaas twee boontjiesade tussen klam watte in elke houer. Sorg dat die klam watte die boontjiesade deeglik bedek. Die boontjies in die vierde houer moet in droë watte toegevou word.

'n Houer moet in elk van die volgende plekke geplaas word:

  1. in 'n donker kas (waarvan die deure toe is), op ‘n warm sonnige plek;
  2. in ‘n oop houer in 'n sonnige plek;
  3. in ‘n plastieksakkie wat dig toegemaak is (die sade binne die watte word in die sakkie gesit), in ‘n sonnige plek;
  4. in 'n sonnige plek, maar onthou om die watte te alle tye DROOG te hou!
  1. Maak die watte elke dag nat (nie in houer no. 4 nie), observeer daagliks (dieselfde tyd elke dag) en teken jou waarnemings aan :

Wat het met die sade gebeur?

Wat het eerste verskyn?

Hoeveel het die wortels gedurende die eerste VYF dae gegroei?

Wat het tweede verskyn?

  1. Die boontjies in houer no.4 kan nie ontkiem nie omdat hulle geen

gehad het nie.

  1. Die boontjies in houer no. 2 het .
  2. Dié in die donker kas het ..

Dit beteken dat nie nodig is vir ontkieming nie,

maar wel die wat deur die lig meegebring word.

  1. Hoekom het die sade in die plastieksak nie ontkiem nie?
  1. 'n Saad of saailing het dus die volgende nodig om te kan groei:
  1. Hoekom verskyn die kiemwortelvóór die blaartjie?
  1. In watter rigting groei die kiemwortel en hoekom?

Die blaartjie groei opwaarts op soek na sonlig om die plant in staat te stel om sy eie voedsel te produseer.

  1. Gebruik 'n stuk wol/tou om daagliks te meet hoe vinnig die kiemwortel en blaartjie groei. Maak 'n penmerk op die wol om die lengte van die kiemwortel/blaartjie aan te dui. Strek nou jou wol (van waar dit begin tot by die penmerk) langs die liniaal om die korrekte mate te kry.
  2. Antwoord nou die vraag wat ons aan die begin gevra het: hoekom vorm plante sade?

Iets nuuts: eensaadlobbige en tweesaadlobbige plante

Assessering

LU 1

WETENSKAPLIKE ONDERSOEK Die leerder is in staat om met selfvertroue op weetgierigheid oor natuurlike verskynsels te reageer, en om binne die konteks van wetenskap, tegnologie en die omgewing verbande te ondersoek en probleme op te los.

 

Dit is duidelik wanneer die leerder:

1.1   ondersoeke beplan;

1.2   ondersoeke uitvoer en data versamel;

1.3       data evalueer en bevindinge kommunikeer;

 

LU 2

KONSTRUKSIE VAN WETENSKAPKENNIS Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.

Dit is duidelik wanneer die leerder:

2.1   betekenisvolle inligting onthou;

2.2   inligting kategoriseer;

2.3       inligting interpreteer.

 

Memorandum

Opdrag:

b) water

c) ontkiem

d) ontkiem – lig

e) sade het lug nodig om te ontkiem, en daar is min lug in die plastieksakkie.

f) (i) lug

(ii) water

(iii) warmte

g) (i) Hoekom verskyn die kiemwortel voor die blaartjie?

Om die plant wat besig is om te ontwikkel, in die grond te anker.

(ii) In watter rigting groei die kiemwortel?

Af – om te anker – hoe dieper hoe stewiger en op soek na water/minerale ens.

i) Sodat nuwe plante kan ontstaan.

Aktiwiteit 1.3Om die lewensiklus van ‘n plant wat met sade voortplant te ondersoekLU 1.1

LU 1.2

LU 1.3

LU 2.3

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, Natuurwetenskappe graad 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10980/1.2
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Natuurwetenskappe graad 5' conversation and receive update notifications?

Ask