Cite
MLA Citation
Barbara R Blackburn and Abbigail Armstrong. Rigor in the 6-12 math and science classroom : a teacher toolkit. London : Routledge, 2018. http://access.bl.uk/ark:/81055/vdc_100073162613.0x000001
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Barbara R Blackburn and Abbigail Armstrong. Rigor in the 6-12 math and science classroom : a teacher toolkit. London : Routledge, 2018. http://access.bl.uk/ark:/81055/vdc_100073162613.0x000001