# Catalog Nienhuis 2023

Mathematics

EARLY CHILDHOOD 3 – 6

SUBTRACTION

Subtraction Strip Board Using the Subtraction Strip Board, the child practices the equations of the subtraction tables 1–18. Natural wooden strips corresponding in length to the squares 1–18 are used to indicate the number to subtract from (minuend) and 1 set of blue strips used to subtract with (subtrahend). A set of red strips is included for further explorations. The 2 sets of strips are stored in hardwood boxes. Item Number: 0092A0 • Subtraction Working Charts The Subtraction Working Charts aid the child in practice and memorization of the subtraction combinations. Includes a control chart, 2 working charts and a box of wooden answer chips. Item Number: 0142B0 • Working Chart Equation Paper 500 sheets with 10 rows of 5 squares printed in black on white paper. Used for memorization exercises. Item Number: 558600 Problem Slips: Subtraction Working Charts 2 sets of color-coded unit subtraction combinations (equations) slips. 1 set of combinations for each of the 2 Subtraction Working Charts. Each set supplied in a separate plastic box. Item Number: 559534 • Subtraction Tables The Subtraction Tables contain the equations necessary for performing the Subtraction Strip Board exercises. 18 sheets per set, 10 complete sets provided. Item Number: 014301 Subtraction Tables Booklet: 1 The ‘traditional’ subtraction tables for the numbers 18–1 with subtrahends in diminishing numerical order (24 booklets). Item Number: 559531

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Nienhuis Montessori 145

Essential

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