ck12.org é seguro?

Considerado seguro pelo WOT

4.5
starstarstarstarhalf-star
(3 Avaliações)
Bom site
Popular
Reivindicar este site
Compartilhar:
Compartilhe seus pensamentos...
K
starempty-star
Medíocre
starempty-star
Razoável
starempty-star
Mediano
starempty-star
Bom
starempty-star
Excelente
3 Avaliações da comunidade
Ordenar por:
Recentes
há 1 ano
Helpful
Útil
·
Denunciar
t
há 7 anos
This site, which offers free educational materials, many of which are used for MOOCs, is well organised and a boon for the self learner. You can download books or even make up your own text book, plus there is a growing wealth of other learning aides and links to similar sites.
Útil
·
Denunciar
há 10 anos
Great site, free knowledge supporting. came to this site through http://www.khanacademy.org/ One tracking cookie found by google analytics.
Útil
·
Denunciar

Sobre este site

CK-12 Foundation provides a library of free online textbooks, videos, exercises, flashcards, and real world applications for over 5000 concepts from arithmetic to history

Confiabilidade
91
/100
Segurança da Criança
93
/100
This site uses cookies for analytics and personalised content. By continuing to browse this site, you agree to our cookies policy
Accept