三年级英语下册 module 4 unit 2 thirteen fourteen fifteen课

3+4=6+5=12+1=7111311+9=208+4=12thirteenfourteenfifteensixteenseventeeneighteennineteen•three→thirteen•four→fourteen•five→fifteen•six→sixteen•seven→seventeen•eight→eighteen•nine→nineteenMagicEyesHowmanypencilsarethere?Howmanymonkeysarethere?Howmanypeachesarethere?Howmanyfootballsarethere?1318121211151719