Right menu

Featured resource


Media > TDT > Mental computation

Mental computation

MC_A_AP_AP2_fig1

Mental strategy observation checklist.

MC_B1_I1_E1_fig1

Use of an empty number line.

MC_B1_I1_E1_fig1

MC_BI_I1_E3_fig1

Hundred board showing counting on.

MC_BI_I1_E3_fig12

MC_BI_I1_E4_fig1

MC_BI_I1_E4_fig2

MC_BI_I2_E1_fig1

Array models illustrating commutative processes for multiplication.

MC_BI_I2_E2_fig1

MC_GT_T1_E2_A1_fig1

Screen grab from L91 The part-adder: make your own easy sums.
Source: © Education Services Australia, 2011.

MC_GT_T1_E2_A2_fig1

Screen grab from L97 The takeaway bar: make your own easy subtractions.
Source: © Education Service Australia, 2011.

MC_GT_T1_E3_A1_fig1

Screen grab from L92 The part-adder: make your own hard sums.
Source: © Education Services Australia, 2011.

MC_GT_T1_E3_A1_fig2

Screen grab from L98 The take-away bar: make your own hard subtractions.
Source: © Education Services Australia, 2011.

MC_GT_T1_E3_A2_fig1

Screen grab 1 from Number line applet.
Material from NZ Maths website published by the New Zealand Ministry of Education. Reproduced with permission from the New Zealand Ministry of Education © Crown.

MC_GT_T1_E3_A2_fig2

Screen grab 2 from Number line applet.
Material from NZ Maths website published by the New Zealand Ministry of Education. Reproduced with permission from the New Zealand Ministry of Education © Crown.

MC_GT_T1_E3_A3_fig2

Screen grab from Number line applet.
Material from NZ Maths website published by the New Zealand Ministry of Education. Reproduced with permission from the New Zealand Ministry of Education © Crown.

MC_GT_T1_E3_A4_fig1

Adding with a bead string (solution 1).

MC_GT_T1_E3_A4_fig2

Adding with a bead string (solution 2).

MC_GT_T1_E5_A1_fig1

Screen grab from L112 The difference bar: generate hard differences.
Source: © Education Services Australia, 2011.

MC_GT_T1_E5_A1_fig2

Screen grab from L110 The difference bar: make your own hard subtractions.
Source: © Education Services Australia, 2011.

MC_GT_T1_E5_A2_fig1

MC_GT_T1_E5_A2_fig2

MC_GT_T1_E5_A2_fig34

Screen grabs from L110 The difference bar: make your own hard subtractions.
Source: © Education Services Australia, 2011

MC_GT_T1_E6_fig1

Number line for 'result unknown' problem.
Material from NZ Maths website published by the New Zealand Ministry of Education. Reproduced with permission from the New Zealand Ministry of Education © Crown.

MC_GT_T1_E6_fig2

Number lines for 'change unknown' problems.
Material from NZ Maths website published by the New Zealand Ministry of Education. Reproduced with permission from the New Zealand Ministry of Education © Crown.

25 50 All