This Eco-friendly Base Ten set is made from recycled wood and a great classroom alternative to plastic. Use to teach basic place value addition and subtraction measurement and volume. An ideal resource to visualise how numbers are represented using manipulatives. Set includes 100 units 10 rods 10 flats and 1 cube.RE-Wood® is a sustainable and ecological material made from shredded wood residues from German production and a binder in a ratio of 80 to 20 which conserves resources. RE-Wood® is 100% recyclable certified with the PEFC seal and free of harmful substances. Articles made of RE-Wood® are stable light and have a high level of safety in use.