How many tens and hundreds in a whole number

Jackie Andrews is the principal of St Teresa’s Primary School, Christchurch, New Zealand, where for the last 10 years she has enjoyed teaching and learning alongside students she describes as “the most fabulous little people”. Her classroom experience, combined with her leadership role, continues to shape the practical, supportive resources she creates for busy educators to make teaching manageable, engaging and effective. Her 75+ educational titles across mathematics, English and curriculum planning are widely used in schools. As schools work through ongoing curriculum changes, Jackie is particularly passionate about creating resources that help teachers make sense of new expectations and confidently support learning so that students experience success in the classroom. Outside of education, Jackie’s greatest joy has been watching her own children grow up and begin to spread their wings.

Jude Callaghan is a freelance educational consultant with over 40 years of experience in the education sector. Throughout her distinguished career, she has shown an enduring commitment to fostering excellence in teaching and learning through the design and delivery of innovative, engaging programmes, particularly in the field of mathematics. Jude brings a wealth of professional expertise and creative insight to the Essential Resources writing team for mathematics.

Suzi de Gouveia is an accomplished educator with over 40 years of teaching experience. After spending 18.5 years as principal of St Teresa’s School in Christchurch, New Zealand, she had a brief retirement before realising this lifestyle wasn’t for her. Missing the vibrant energy and daily action of the classroom, she has returned to teaching part-time. Throughout her career, Suzi has developed a wealth of innovative ideas and resources dedicated to enhancing students’ learning. She continues to bring that same passion and expertise to the school environment today.