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Building Materials: Properties and Use
BookWidgets exercise on different building materials: glass, brick, plastics, natural stone, metal, wood and concrete.
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Interactive exercise (6)Teacher, ICT co-ordinator, … -
Clipart Gallery Danger and chemical products: Dangerous and chemical products
OpenOffice.org and LibreOffice can be extended with many extensions. This free extension adds over 400 vector CC cliparts related to security. You can enlarge them without loss of quality.
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App or softwareTeacher