Preface -- The Informed Vision: -- An Essay on Science Education -- The Informed Vision: An Essay on Science Education -- (1965) -- Mind and Mechanism in Education -- Mind and Mechanism in Education -- (1968) -- Childhood and the Education of Intellectuals -- Childhood and the Education of Intellectuals -- (1966) -- I, Thou, and It -- I, Thou, and It -- (1967) -- Messing About in Science -- Messing About in Science -- (1965) -- The Bird in the Window -- The Bird in the Window -- (1969) -- Two Essays on Mathematics Teaching -- Mathematics - Practical and Impractical -- (1967) -- Nature, Man and Mathematics -- (1972) -- Development as Education -- Development as Education: A Proposal for the Improvement of Elementary Education -- (1967) -- On Environmental Education -- On Environmental Education -- (1970) -- John Dewey Revisited -- John Dewey Revisited -- (1968) -- On Living in Trees -- On Living in Trees -- (1965) -- On Understanding the Under standing of Children -- On Understanding the Understanding of Children -- (1967) -- Human Nature and the Scope of Education -- Human Nature and the Scope of Education -- (1972) -- The Educational Cycle and Its Closure -- Equality -- Freedom -- Rationality.