Hierdie wetenskaplik akkurate handleiding is daarop gemik om tuiniers en tuinboukundiges te help om vetplant- en rotspesies van oral in die wereld te identifiseer. Inleidende hoofstukke oor waterwys tuinmaak, gebruik, bewaring, verbouing en voortplanting van vetplante, tesame met 'n gedeelte oor tuinmaak met vetplante, wat nuttige wenke gee.

Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Harde band, meer as 400 volkleurfoto's

Ook beskikbaar in Engels - Guide to the Aloes of South Africa

Gids tot die Aalwyne van Suid-Afrika is die eerste volledige en moderne aalwyngids in Afrikaans. Dit is 'n volkleur-handleiding en die hoë gehalte foto's maak dit vir die algemene belangstellende sowel as die wetenskaplike maklik om aalwyne in die natuur en in tuine te identifiseer. Die inhoud weerspieël die nuutste wetenskaplike bevindings en bevat:
Volledige beskrywings van al 155 spesies wat tans deur aalwynkenners erken word, met inligting oor kenmerke waarvolgens die plante geïdentifiseer kan word, blomtyd, habitat en geografiese verspreiding, bewaringstatus, oorsprong van die wetenskaplike name, en volksname, asook algemene riglyne vir die kweek van die plante, en inligting oor hul tradisionele gebruike.
Meer as 400 kleurfoto's wat die habitat en groeivorm aantoon, sowel as nabyfoto's van die blomme en blare.
Verspreidingskaarte van al die spesies, as 'n verdere hulpmiddel vir identifisering.
'n Gebruikersvriendelike klassifikasiestelsel wat die aalwyne in 12 groepe verdeel, hoofsaaklik aan die hand van hul groeivorms.
Inleidende hoofstukke wat die fokus plaas op aalwynagtige plante (wat met aalwyne verwar kan word); medisinale, kosmetiese en tonikumgebruike; bewaring; kweking en vermeerdering; tuinmaak en landskapontwerp met aalwyne; hibriede en kultivars, plae en siektes; en verwantskappe en genuskonsepte.
'n Geïllustreerde woordelys van plantkundige terme, indeks tot die wetenskaplike en volksname, asook 'n literatuurlys vir verdere leeswerk.

Die outeurs: Ben-Erik van Wyk is 'n professor in Plantkunde aan die Universiteit van Johannesburg en het 'n navorsingsbelangstelling in plantsistematiek en plantbenutting. Hy is die skrywer van internasionale wetenskaplike topverkopers soos Medicinal Plants of the World en Food Plants of the World.
Gideon F. Smith is Hoofdirekteur van Biosistematiek en Versamelings by die Suid- Afrikaanse Nasionale Biodiversiteitsinstituut, professor in Plantwetenskap aan die Universiteit van Pretoria, en 'n navorsingsgenoot aan die Universiteit van Coimbra in Portugal. Hy is die skrywer of medeskrywer van meer as 40 boeke oor onder meer aalwyne, sukkulente, tuinbou, tuine, Angola, taksonomie en indringerplante.

Doctor Edward Jenner, born in the early eighteenth century, was the discoverer of a preventive for smallpox, the greatest killer of mankind. This contagious disease destroys its victims in 10 to 14 days. Those who survive frequently are left horribly scarred or partially or completely blind.

The story of Doctor Jenner and smallpox is told by guests at a dinner party at an old English home, on the evening of the 180th anniversary of Doctor Jenner's death. To celebrate the occasion, the individuals review his life story, including his many discoveries and the trials and tribulations associated with smallpox vaccination being accepted as the way to prevent smallpox. Jenner eventually received universal acclaim. The guests at the dinner party, in the process of telling the story of Doctor Jenner, reveal a great deal about themselves.

Assess classroom learning and improve instruction with comfort and ease!

Some of the key topics covered:

• Determining goals, targets, and objectives
• Designing assessments that evolve from instruction
• Choosing authentic assessments and projects
• Using multiple choice, essays, and reports
• Preparing students for assessment
• Scoring and communicating results
• Planning parent-teacher conferences
• Assessing students with special needs

This is a comprehensive but accessible guide to increase effectiveness in the classroom. An essential resource for both experienced and novice teachers who want to gain confidence about the assessment process.