Jeffrey E. Barrett , Douglas H. Clements
Douglas H. Clements
Sally Tucker , Douglas H. Clements
Teaching children mathematics 6 ( 2) 129 -130
Douglas H. Clements
Educational Technology archive 24 ( 11) 7 -16
Douglas H. Clements , Mary M. Lindquist
Teaching children mathematics 7 ( 7)
Carol Nowakowski , Douglas H. Clements
Teaching children mathematics 6 ( 2) 132
Julie Sarama , Douglas H. Clements
Uno: Revista de didáctica de las matematicas ( 47) 67 -75
Douglas H. Clements , Barbara A. Burns
Teaching children mathematics 6 ( 2) 128 -129
Julie Sarama , Douglas H. Clements
Early Childhood Today 21 ( 1) 17 -18
Julie Sarama , Michael T. Battista , Douglas H. Clements
Focus on learning problems in mathematics 20 47 -64
Julie Sarama , Douglas H. Clements
Early Childhood Today 21 ( 3) 20
Julie Sarama , Douglas H. Clements
Early Childhood Today 19 ( 4) 50 -57
Linda Gojak , Douglas H. Clements
Teaching children mathematics 6 ( 2) 132
Jeffrey E. Barrett , Douglas H. Clements , Sarah-Jean Pennisi , Mokaeane V. Polaki
Journal for Research in Mathematics Education 37 ( 3) 187 -221
Douglas H. Clements
Computers, Reading and Language Arts 1 ( 3) 15 -18
Julie Sarama , Douglas H. Clements
Early Childhood Today 20 ( 7) 12 -13
Julie S. Meredith , Douglas H. Clements
Journal of Computing in Childhood Education archive 4
Douglas H. Clements
Jeffrey E. Barrett , Douglas H. Clements , Sarah-Jean Pennisi , Mokaeane V. Polaki
Julie Sarama , Douglas H. Clements
Early Childhood Today 21 ( 2) 24 -32